Embed Size (px)
Citation preview
Energy transferHow is energy changing
04092016 copy cgrahamphysicscom 2016
Can you identify all energy transfers
bull Crouching Tiger Hidden Dragon
04092016 copy cgrahamphysicscom 2016
Watch the video clip
bull What happens to energy when it is used
bull What energy transfers are occurring
bull What energy changes can you think off
bull Fire Breathing
04092016 copy cgrahamphysicscom 2016
Aimbull To identify energy transfers
bull To identify waste energy
Key words
bull Wasted energy
bull Useful energy
04092016 copy cgrahamphysicscom 2016
04092016copy cgrahamphysicscom 2016
The bigger picture
Have you ever wondered
Where does all the energy come from
All our food energy comes from the SunHow
Sometimes we eat things that eat things that grow
So if we eat vegetables or meat we can say that
all of our food energy has come from the Sun
Energy from the Sun
Animals such as humans need to eat to live grow and reproduce
and we eat things that grow as a result of sunshine
giving us this food chain
light energy(from the sun)
chemical (stored) energy
(in the plant)
chemical (stored) energy
(inside the animal)
Energy makes things happen
When things happen an energy change takes place
One of the most important formsof energy is electrical energy
Electrical Heat and Light
04092016 copy cgrahamphysicscom 2016
Electrical energy comes from
chemical energy in thefossil fuels used inpower stations
kinetic energy indynamos
light energy insolar cells
chemical energy storedin batteries
04092016 copy cgrahamphysicscom 2016
Electrical energy helps move energy from one place to another
Most power stations use fossil fuels to make electricity
which is transmitted through cables
which we can then use in our homes
stored chemical energy electrical energylight energy (or sound movement or heat energy)
04092016 copy cgrahamphysicscom 2016
Electrical energy can change to
light energysound energy
heat energy kinetic (movement) energy
04092016 copy cgrahamphysicscom 2016
But each time some type of energy is created that is not useful
Wasted energy
04092016 copy cgrahamphysicscom 2016
Whenever energy is changed from one form to another some energy is always wasted
Energy is usually wasted as
All electrical devices produce a small amount of heat energy which is normally wasted
heat energy
sound energy
Wasted sound energyIf you can hear a device that is not designed to make noise then energy is wasted as sound
Examples of devices that waste energy as sound include
washing machine
car engine
hairdryer
jet engine
Wasted heat energy
04092016 copy cgrahamphysicscom 2016
If a device gets warm and it is not designed to get warm then energy is wasted as heat
Examples of devices that waste energy as heat include
radio
mobile phone charger
television
Car engine
04092016 copy cgrahamphysicscom 2016
Which type of energy is wasted
What happens to wasted energy
04092016 copy cgrahamphysicscom 2016
Wasted energy spreads out into the surroundings ndash this is called dissipated energy
This dissipated energy is too spread out to do useful work and so cannot be re-used
Remember that energy cannot be created or destroyed
This is why it is important to reduce the amount of energy that is wasted
Can you name the energy transfer
copy cgrahamphysicscom 2016
Wasted heatWasted sound and heat
Wasted transpiration
heat
sound
light
electrical
Can you draw the energy flow diagram
04092016 copy cgrahamphysicscom 2016
heat
soundelectrical
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
Can you identify all energy transfers
bull Crouching Tiger Hidden Dragon
04092016 copy cgrahamphysicscom 2016
Watch the video clip
bull What happens to energy when it is used
bull What energy transfers are occurring
bull What energy changes can you think off
bull Fire Breathing
04092016 copy cgrahamphysicscom 2016
Aimbull To identify energy transfers
bull To identify waste energy
Key words
bull Wasted energy
bull Useful energy
04092016 copy cgrahamphysicscom 2016
04092016copy cgrahamphysicscom 2016
The bigger picture
Have you ever wondered
Where does all the energy come from
All our food energy comes from the SunHow
Sometimes we eat things that eat things that grow
So if we eat vegetables or meat we can say that
all of our food energy has come from the Sun
Energy from the Sun
Animals such as humans need to eat to live grow and reproduce
and we eat things that grow as a result of sunshine
giving us this food chain
light energy(from the sun)
chemical (stored) energy
(in the plant)
chemical (stored) energy
(inside the animal)
Energy makes things happen
When things happen an energy change takes place
One of the most important formsof energy is electrical energy
Electrical Heat and Light
04092016 copy cgrahamphysicscom 2016
Electrical energy comes from
chemical energy in thefossil fuels used inpower stations
kinetic energy indynamos
light energy insolar cells
chemical energy storedin batteries
04092016 copy cgrahamphysicscom 2016
Electrical energy helps move energy from one place to another
Most power stations use fossil fuels to make electricity
which is transmitted through cables
which we can then use in our homes
stored chemical energy electrical energylight energy (or sound movement or heat energy)
04092016 copy cgrahamphysicscom 2016
Electrical energy can change to
light energysound energy
heat energy kinetic (movement) energy
04092016 copy cgrahamphysicscom 2016
But each time some type of energy is created that is not useful
Wasted energy
04092016 copy cgrahamphysicscom 2016
Whenever energy is changed from one form to another some energy is always wasted
Energy is usually wasted as
All electrical devices produce a small amount of heat energy which is normally wasted
heat energy
sound energy
Wasted sound energyIf you can hear a device that is not designed to make noise then energy is wasted as sound
Examples of devices that waste energy as sound include
washing machine
car engine
hairdryer
jet engine
Wasted heat energy
04092016 copy cgrahamphysicscom 2016
If a device gets warm and it is not designed to get warm then energy is wasted as heat
Examples of devices that waste energy as heat include
radio
mobile phone charger
television
Car engine
04092016 copy cgrahamphysicscom 2016
Which type of energy is wasted
What happens to wasted energy
04092016 copy cgrahamphysicscom 2016
Wasted energy spreads out into the surroundings ndash this is called dissipated energy
This dissipated energy is too spread out to do useful work and so cannot be re-used
Remember that energy cannot be created or destroyed
This is why it is important to reduce the amount of energy that is wasted
Can you name the energy transfer
copy cgrahamphysicscom 2016
Wasted heatWasted sound and heat
Wasted transpiration
heat
sound
light
electrical
Can you draw the energy flow diagram
04092016 copy cgrahamphysicscom 2016
heat
soundelectrical
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
Watch the video clip
bull What happens to energy when it is used
bull What energy transfers are occurring
bull What energy changes can you think off
bull Fire Breathing
04092016 copy cgrahamphysicscom 2016
Aimbull To identify energy transfers
bull To identify waste energy
Key words
bull Wasted energy
bull Useful energy
04092016 copy cgrahamphysicscom 2016
04092016copy cgrahamphysicscom 2016
The bigger picture
Have you ever wondered
Where does all the energy come from
All our food energy comes from the SunHow
Sometimes we eat things that eat things that grow
So if we eat vegetables or meat we can say that
all of our food energy has come from the Sun
Energy from the Sun
Animals such as humans need to eat to live grow and reproduce
and we eat things that grow as a result of sunshine
giving us this food chain
light energy(from the sun)
chemical (stored) energy
(in the plant)
chemical (stored) energy
(inside the animal)
Energy makes things happen
When things happen an energy change takes place
One of the most important formsof energy is electrical energy
Electrical Heat and Light
04092016 copy cgrahamphysicscom 2016
Electrical energy comes from
chemical energy in thefossil fuels used inpower stations
kinetic energy indynamos
light energy insolar cells
chemical energy storedin batteries
04092016 copy cgrahamphysicscom 2016
Electrical energy helps move energy from one place to another
Most power stations use fossil fuels to make electricity
which is transmitted through cables
which we can then use in our homes
stored chemical energy electrical energylight energy (or sound movement or heat energy)
04092016 copy cgrahamphysicscom 2016
Electrical energy can change to
light energysound energy
heat energy kinetic (movement) energy
04092016 copy cgrahamphysicscom 2016
But each time some type of energy is created that is not useful
Wasted energy
04092016 copy cgrahamphysicscom 2016
Whenever energy is changed from one form to another some energy is always wasted
Energy is usually wasted as
All electrical devices produce a small amount of heat energy which is normally wasted
heat energy
sound energy
Wasted sound energyIf you can hear a device that is not designed to make noise then energy is wasted as sound
Examples of devices that waste energy as sound include
washing machine
car engine
hairdryer
jet engine
Wasted heat energy
04092016 copy cgrahamphysicscom 2016
If a device gets warm and it is not designed to get warm then energy is wasted as heat
Examples of devices that waste energy as heat include
radio
mobile phone charger
television
Car engine
04092016 copy cgrahamphysicscom 2016
Which type of energy is wasted
What happens to wasted energy
04092016 copy cgrahamphysicscom 2016
Wasted energy spreads out into the surroundings ndash this is called dissipated energy
This dissipated energy is too spread out to do useful work and so cannot be re-used
Remember that energy cannot be created or destroyed
This is why it is important to reduce the amount of energy that is wasted
Can you name the energy transfer
copy cgrahamphysicscom 2016
Wasted heatWasted sound and heat
Wasted transpiration
heat
sound
light
electrical
Can you draw the energy flow diagram
04092016 copy cgrahamphysicscom 2016
heat
soundelectrical
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
Aimbull To identify energy transfers
bull To identify waste energy
Key words
bull Wasted energy
bull Useful energy
04092016 copy cgrahamphysicscom 2016
04092016copy cgrahamphysicscom 2016
The bigger picture
Have you ever wondered
Where does all the energy come from
All our food energy comes from the SunHow
Sometimes we eat things that eat things that grow
So if we eat vegetables or meat we can say that
all of our food energy has come from the Sun
Energy from the Sun
Animals such as humans need to eat to live grow and reproduce
and we eat things that grow as a result of sunshine
giving us this food chain
light energy(from the sun)
chemical (stored) energy
(in the plant)
chemical (stored) energy
(inside the animal)
Energy makes things happen
When things happen an energy change takes place
One of the most important formsof energy is electrical energy
Electrical Heat and Light
04092016 copy cgrahamphysicscom 2016
Electrical energy comes from
chemical energy in thefossil fuels used inpower stations
kinetic energy indynamos
light energy insolar cells
chemical energy storedin batteries
04092016 copy cgrahamphysicscom 2016
Electrical energy helps move energy from one place to another
Most power stations use fossil fuels to make electricity
which is transmitted through cables
which we can then use in our homes
stored chemical energy electrical energylight energy (or sound movement or heat energy)
04092016 copy cgrahamphysicscom 2016
Electrical energy can change to
light energysound energy
heat energy kinetic (movement) energy
04092016 copy cgrahamphysicscom 2016
But each time some type of energy is created that is not useful
Wasted energy
04092016 copy cgrahamphysicscom 2016
Whenever energy is changed from one form to another some energy is always wasted
Energy is usually wasted as
All electrical devices produce a small amount of heat energy which is normally wasted
heat energy
sound energy
Wasted sound energyIf you can hear a device that is not designed to make noise then energy is wasted as sound
Examples of devices that waste energy as sound include
washing machine
car engine
hairdryer
jet engine
Wasted heat energy
04092016 copy cgrahamphysicscom 2016
If a device gets warm and it is not designed to get warm then energy is wasted as heat
Examples of devices that waste energy as heat include
radio
mobile phone charger
television
Car engine
04092016 copy cgrahamphysicscom 2016
Which type of energy is wasted
What happens to wasted energy
04092016 copy cgrahamphysicscom 2016
Wasted energy spreads out into the surroundings ndash this is called dissipated energy
This dissipated energy is too spread out to do useful work and so cannot be re-used
Remember that energy cannot be created or destroyed
This is why it is important to reduce the amount of energy that is wasted
Can you name the energy transfer
copy cgrahamphysicscom 2016
Wasted heatWasted sound and heat
Wasted transpiration
heat
sound
light
electrical
Can you draw the energy flow diagram
04092016 copy cgrahamphysicscom 2016
heat
soundelectrical
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
04092016copy cgrahamphysicscom 2016
The bigger picture
Have you ever wondered
Where does all the energy come from
All our food energy comes from the SunHow
Sometimes we eat things that eat things that grow
So if we eat vegetables or meat we can say that
all of our food energy has come from the Sun
Energy from the Sun
Animals such as humans need to eat to live grow and reproduce
and we eat things that grow as a result of sunshine
giving us this food chain
light energy(from the sun)
chemical (stored) energy
(in the plant)
chemical (stored) energy
(inside the animal)
Energy makes things happen
When things happen an energy change takes place
One of the most important formsof energy is electrical energy
Electrical Heat and Light
04092016 copy cgrahamphysicscom 2016
Electrical energy comes from
chemical energy in thefossil fuels used inpower stations
kinetic energy indynamos
light energy insolar cells
chemical energy storedin batteries
04092016 copy cgrahamphysicscom 2016
Electrical energy helps move energy from one place to another
Most power stations use fossil fuels to make electricity
which is transmitted through cables
which we can then use in our homes
stored chemical energy electrical energylight energy (or sound movement or heat energy)
04092016 copy cgrahamphysicscom 2016
Electrical energy can change to
light energysound energy
heat energy kinetic (movement) energy
04092016 copy cgrahamphysicscom 2016
But each time some type of energy is created that is not useful
Wasted energy
04092016 copy cgrahamphysicscom 2016
Whenever energy is changed from one form to another some energy is always wasted
Energy is usually wasted as
All electrical devices produce a small amount of heat energy which is normally wasted
heat energy
sound energy
Wasted sound energyIf you can hear a device that is not designed to make noise then energy is wasted as sound
Examples of devices that waste energy as sound include
washing machine
car engine
hairdryer
jet engine
Wasted heat energy
04092016 copy cgrahamphysicscom 2016
If a device gets warm and it is not designed to get warm then energy is wasted as heat
Examples of devices that waste energy as heat include
radio
mobile phone charger
television
Car engine
04092016 copy cgrahamphysicscom 2016
Which type of energy is wasted
What happens to wasted energy
04092016 copy cgrahamphysicscom 2016
Wasted energy spreads out into the surroundings ndash this is called dissipated energy
This dissipated energy is too spread out to do useful work and so cannot be re-used
Remember that energy cannot be created or destroyed
This is why it is important to reduce the amount of energy that is wasted
Can you name the energy transfer
copy cgrahamphysicscom 2016
Wasted heatWasted sound and heat
Wasted transpiration
heat
sound
light
electrical
Can you draw the energy flow diagram
04092016 copy cgrahamphysicscom 2016
heat
soundelectrical
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
All our food energy comes from the SunHow
Sometimes we eat things that eat things that grow
So if we eat vegetables or meat we can say that
all of our food energy has come from the Sun
Energy from the Sun
Animals such as humans need to eat to live grow and reproduce
and we eat things that grow as a result of sunshine
giving us this food chain
light energy(from the sun)
chemical (stored) energy
(in the plant)
chemical (stored) energy
(inside the animal)
Energy makes things happen
When things happen an energy change takes place
One of the most important formsof energy is electrical energy
Electrical Heat and Light
04092016 copy cgrahamphysicscom 2016
Electrical energy comes from
chemical energy in thefossil fuels used inpower stations
kinetic energy indynamos
light energy insolar cells
chemical energy storedin batteries
04092016 copy cgrahamphysicscom 2016
Electrical energy helps move energy from one place to another
Most power stations use fossil fuels to make electricity
which is transmitted through cables
which we can then use in our homes
stored chemical energy electrical energylight energy (or sound movement or heat energy)
04092016 copy cgrahamphysicscom 2016
Electrical energy can change to
light energysound energy
heat energy kinetic (movement) energy
04092016 copy cgrahamphysicscom 2016
But each time some type of energy is created that is not useful
Wasted energy
04092016 copy cgrahamphysicscom 2016
Whenever energy is changed from one form to another some energy is always wasted
Energy is usually wasted as
All electrical devices produce a small amount of heat energy which is normally wasted
heat energy
sound energy
Wasted sound energyIf you can hear a device that is not designed to make noise then energy is wasted as sound
Examples of devices that waste energy as sound include
washing machine
car engine
hairdryer
jet engine
Wasted heat energy
04092016 copy cgrahamphysicscom 2016
If a device gets warm and it is not designed to get warm then energy is wasted as heat
Examples of devices that waste energy as heat include
radio
mobile phone charger
television
Car engine
04092016 copy cgrahamphysicscom 2016
Which type of energy is wasted
What happens to wasted energy
04092016 copy cgrahamphysicscom 2016
Wasted energy spreads out into the surroundings ndash this is called dissipated energy
This dissipated energy is too spread out to do useful work and so cannot be re-used
Remember that energy cannot be created or destroyed
This is why it is important to reduce the amount of energy that is wasted
Can you name the energy transfer
copy cgrahamphysicscom 2016
Wasted heatWasted sound and heat
Wasted transpiration
heat
sound
light
electrical
Can you draw the energy flow diagram
04092016 copy cgrahamphysicscom 2016
heat
soundelectrical
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
Energy from the Sun
Animals such as humans need to eat to live grow and reproduce
and we eat things that grow as a result of sunshine
giving us this food chain
light energy(from the sun)
chemical (stored) energy
(in the plant)
chemical (stored) energy
(inside the animal)
Energy makes things happen
When things happen an energy change takes place
One of the most important formsof energy is electrical energy
Electrical Heat and Light
04092016 copy cgrahamphysicscom 2016
Electrical energy comes from
chemical energy in thefossil fuels used inpower stations
kinetic energy indynamos
light energy insolar cells
chemical energy storedin batteries
04092016 copy cgrahamphysicscom 2016
Electrical energy helps move energy from one place to another
Most power stations use fossil fuels to make electricity
which is transmitted through cables
which we can then use in our homes
stored chemical energy electrical energylight energy (or sound movement or heat energy)
04092016 copy cgrahamphysicscom 2016
Electrical energy can change to
light energysound energy
heat energy kinetic (movement) energy
04092016 copy cgrahamphysicscom 2016
But each time some type of energy is created that is not useful
Wasted energy
04092016 copy cgrahamphysicscom 2016
Whenever energy is changed from one form to another some energy is always wasted
Energy is usually wasted as
All electrical devices produce a small amount of heat energy which is normally wasted
heat energy
sound energy
Wasted sound energyIf you can hear a device that is not designed to make noise then energy is wasted as sound
Examples of devices that waste energy as sound include
washing machine
car engine
hairdryer
jet engine
Wasted heat energy
04092016 copy cgrahamphysicscom 2016
If a device gets warm and it is not designed to get warm then energy is wasted as heat
Examples of devices that waste energy as heat include
radio
mobile phone charger
television
Car engine
04092016 copy cgrahamphysicscom 2016
Which type of energy is wasted
What happens to wasted energy
04092016 copy cgrahamphysicscom 2016
Wasted energy spreads out into the surroundings ndash this is called dissipated energy
This dissipated energy is too spread out to do useful work and so cannot be re-used
Remember that energy cannot be created or destroyed
This is why it is important to reduce the amount of energy that is wasted
Can you name the energy transfer
copy cgrahamphysicscom 2016
Wasted heatWasted sound and heat
Wasted transpiration
heat
sound
light
electrical
Can you draw the energy flow diagram
04092016 copy cgrahamphysicscom 2016
heat
soundelectrical
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
Energy makes things happen
When things happen an energy change takes place
One of the most important formsof energy is electrical energy
Electrical Heat and Light
04092016 copy cgrahamphysicscom 2016
Electrical energy comes from
chemical energy in thefossil fuels used inpower stations
kinetic energy indynamos
light energy insolar cells
chemical energy storedin batteries
04092016 copy cgrahamphysicscom 2016
Electrical energy helps move energy from one place to another
Most power stations use fossil fuels to make electricity
which is transmitted through cables
which we can then use in our homes
stored chemical energy electrical energylight energy (or sound movement or heat energy)
04092016 copy cgrahamphysicscom 2016
Electrical energy can change to
light energysound energy
heat energy kinetic (movement) energy
04092016 copy cgrahamphysicscom 2016
But each time some type of energy is created that is not useful
Wasted energy
04092016 copy cgrahamphysicscom 2016
Whenever energy is changed from one form to another some energy is always wasted
Energy is usually wasted as
All electrical devices produce a small amount of heat energy which is normally wasted
heat energy
sound energy
Wasted sound energyIf you can hear a device that is not designed to make noise then energy is wasted as sound
Examples of devices that waste energy as sound include
washing machine
car engine
hairdryer
jet engine
Wasted heat energy
04092016 copy cgrahamphysicscom 2016
If a device gets warm and it is not designed to get warm then energy is wasted as heat
Examples of devices that waste energy as heat include
radio
mobile phone charger
television
Car engine
04092016 copy cgrahamphysicscom 2016
Which type of energy is wasted
What happens to wasted energy
04092016 copy cgrahamphysicscom 2016
Wasted energy spreads out into the surroundings ndash this is called dissipated energy
This dissipated energy is too spread out to do useful work and so cannot be re-used
Remember that energy cannot be created or destroyed
This is why it is important to reduce the amount of energy that is wasted
Can you name the energy transfer
copy cgrahamphysicscom 2016
Wasted heatWasted sound and heat
Wasted transpiration
heat
sound
light
electrical
Can you draw the energy flow diagram
04092016 copy cgrahamphysicscom 2016
heat
soundelectrical
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
Electrical energy comes from
chemical energy in thefossil fuels used inpower stations
kinetic energy indynamos
light energy insolar cells
chemical energy storedin batteries
04092016 copy cgrahamphysicscom 2016
Electrical energy helps move energy from one place to another
Most power stations use fossil fuels to make electricity
which is transmitted through cables
which we can then use in our homes
stored chemical energy electrical energylight energy (or sound movement or heat energy)
04092016 copy cgrahamphysicscom 2016
Electrical energy can change to
light energysound energy
heat energy kinetic (movement) energy
04092016 copy cgrahamphysicscom 2016
But each time some type of energy is created that is not useful
Wasted energy
04092016 copy cgrahamphysicscom 2016
Whenever energy is changed from one form to another some energy is always wasted
Energy is usually wasted as
All electrical devices produce a small amount of heat energy which is normally wasted
heat energy
sound energy
Wasted sound energyIf you can hear a device that is not designed to make noise then energy is wasted as sound
Examples of devices that waste energy as sound include
washing machine
car engine
hairdryer
jet engine
Wasted heat energy
04092016 copy cgrahamphysicscom 2016
If a device gets warm and it is not designed to get warm then energy is wasted as heat
Examples of devices that waste energy as heat include
radio
mobile phone charger
television
Car engine
04092016 copy cgrahamphysicscom 2016
Which type of energy is wasted
What happens to wasted energy
04092016 copy cgrahamphysicscom 2016
Wasted energy spreads out into the surroundings ndash this is called dissipated energy
This dissipated energy is too spread out to do useful work and so cannot be re-used
Remember that energy cannot be created or destroyed
This is why it is important to reduce the amount of energy that is wasted
Can you name the energy transfer
copy cgrahamphysicscom 2016
Wasted heatWasted sound and heat
Wasted transpiration
heat
sound
light
electrical
Can you draw the energy flow diagram
04092016 copy cgrahamphysicscom 2016
heat
soundelectrical
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
Electrical energy helps move energy from one place to another
Most power stations use fossil fuels to make electricity
which is transmitted through cables
which we can then use in our homes
stored chemical energy electrical energylight energy (or sound movement or heat energy)
04092016 copy cgrahamphysicscom 2016
Electrical energy can change to
light energysound energy
heat energy kinetic (movement) energy
04092016 copy cgrahamphysicscom 2016
But each time some type of energy is created that is not useful
Wasted energy
04092016 copy cgrahamphysicscom 2016
Whenever energy is changed from one form to another some energy is always wasted
Energy is usually wasted as
All electrical devices produce a small amount of heat energy which is normally wasted
heat energy
sound energy
Wasted sound energyIf you can hear a device that is not designed to make noise then energy is wasted as sound
Examples of devices that waste energy as sound include
washing machine
car engine
hairdryer
jet engine
Wasted heat energy
04092016 copy cgrahamphysicscom 2016
If a device gets warm and it is not designed to get warm then energy is wasted as heat
Examples of devices that waste energy as heat include
radio
mobile phone charger
television
Car engine
04092016 copy cgrahamphysicscom 2016
Which type of energy is wasted
What happens to wasted energy
04092016 copy cgrahamphysicscom 2016
Wasted energy spreads out into the surroundings ndash this is called dissipated energy
This dissipated energy is too spread out to do useful work and so cannot be re-used
Remember that energy cannot be created or destroyed
This is why it is important to reduce the amount of energy that is wasted
Can you name the energy transfer
copy cgrahamphysicscom 2016
Wasted heatWasted sound and heat
Wasted transpiration
heat
sound
light
electrical
Can you draw the energy flow diagram
04092016 copy cgrahamphysicscom 2016
heat
soundelectrical
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
Electrical energy can change to
light energysound energy
heat energy kinetic (movement) energy
04092016 copy cgrahamphysicscom 2016
But each time some type of energy is created that is not useful
Wasted energy
04092016 copy cgrahamphysicscom 2016
Whenever energy is changed from one form to another some energy is always wasted
Energy is usually wasted as
All electrical devices produce a small amount of heat energy which is normally wasted
heat energy
sound energy
Wasted sound energyIf you can hear a device that is not designed to make noise then energy is wasted as sound
Examples of devices that waste energy as sound include
washing machine
car engine
hairdryer
jet engine
Wasted heat energy
04092016 copy cgrahamphysicscom 2016
If a device gets warm and it is not designed to get warm then energy is wasted as heat
Examples of devices that waste energy as heat include
radio
mobile phone charger
television
Car engine
04092016 copy cgrahamphysicscom 2016
Which type of energy is wasted
What happens to wasted energy
04092016 copy cgrahamphysicscom 2016
Wasted energy spreads out into the surroundings ndash this is called dissipated energy
This dissipated energy is too spread out to do useful work and so cannot be re-used
Remember that energy cannot be created or destroyed
This is why it is important to reduce the amount of energy that is wasted
Can you name the energy transfer
copy cgrahamphysicscom 2016
Wasted heatWasted sound and heat
Wasted transpiration
heat
sound
light
electrical
Can you draw the energy flow diagram
04092016 copy cgrahamphysicscom 2016
heat
soundelectrical
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
Wasted energy
04092016 copy cgrahamphysicscom 2016
Whenever energy is changed from one form to another some energy is always wasted
Energy is usually wasted as
All electrical devices produce a small amount of heat energy which is normally wasted
heat energy
sound energy
Wasted sound energyIf you can hear a device that is not designed to make noise then energy is wasted as sound
Examples of devices that waste energy as sound include
washing machine
car engine
hairdryer
jet engine
Wasted heat energy
04092016 copy cgrahamphysicscom 2016
If a device gets warm and it is not designed to get warm then energy is wasted as heat
Examples of devices that waste energy as heat include
radio
mobile phone charger
television
Car engine
04092016 copy cgrahamphysicscom 2016
Which type of energy is wasted
What happens to wasted energy
04092016 copy cgrahamphysicscom 2016
Wasted energy spreads out into the surroundings ndash this is called dissipated energy
This dissipated energy is too spread out to do useful work and so cannot be re-used
Remember that energy cannot be created or destroyed
This is why it is important to reduce the amount of energy that is wasted
Can you name the energy transfer
copy cgrahamphysicscom 2016
Wasted heatWasted sound and heat
Wasted transpiration
heat
sound
light
electrical
Can you draw the energy flow diagram
04092016 copy cgrahamphysicscom 2016
heat
soundelectrical
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
Wasted sound energyIf you can hear a device that is not designed to make noise then energy is wasted as sound
Examples of devices that waste energy as sound include
washing machine
car engine
hairdryer
jet engine
Wasted heat energy
04092016 copy cgrahamphysicscom 2016
If a device gets warm and it is not designed to get warm then energy is wasted as heat
Examples of devices that waste energy as heat include
radio
mobile phone charger
television
Car engine
04092016 copy cgrahamphysicscom 2016
Which type of energy is wasted
What happens to wasted energy
04092016 copy cgrahamphysicscom 2016
Wasted energy spreads out into the surroundings ndash this is called dissipated energy
This dissipated energy is too spread out to do useful work and so cannot be re-used
Remember that energy cannot be created or destroyed
This is why it is important to reduce the amount of energy that is wasted
Can you name the energy transfer
copy cgrahamphysicscom 2016
Wasted heatWasted sound and heat
Wasted transpiration
heat
sound
light
electrical
Can you draw the energy flow diagram
04092016 copy cgrahamphysicscom 2016
heat
soundelectrical
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
Wasted heat energy
04092016 copy cgrahamphysicscom 2016
If a device gets warm and it is not designed to get warm then energy is wasted as heat
Examples of devices that waste energy as heat include
radio
mobile phone charger
television
Car engine
04092016 copy cgrahamphysicscom 2016
Which type of energy is wasted
What happens to wasted energy
04092016 copy cgrahamphysicscom 2016
Wasted energy spreads out into the surroundings ndash this is called dissipated energy
This dissipated energy is too spread out to do useful work and so cannot be re-used
Remember that energy cannot be created or destroyed
This is why it is important to reduce the amount of energy that is wasted
Can you name the energy transfer
copy cgrahamphysicscom 2016
Wasted heatWasted sound and heat
Wasted transpiration
heat
sound
light
electrical
Can you draw the energy flow diagram
04092016 copy cgrahamphysicscom 2016
heat
soundelectrical
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
04092016 copy cgrahamphysicscom 2016
Which type of energy is wasted
What happens to wasted energy
04092016 copy cgrahamphysicscom 2016
Wasted energy spreads out into the surroundings ndash this is called dissipated energy
This dissipated energy is too spread out to do useful work and so cannot be re-used
Remember that energy cannot be created or destroyed
This is why it is important to reduce the amount of energy that is wasted
Can you name the energy transfer
copy cgrahamphysicscom 2016
Wasted heatWasted sound and heat
Wasted transpiration
heat
sound
light
electrical
Can you draw the energy flow diagram
04092016 copy cgrahamphysicscom 2016
heat
soundelectrical
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
What happens to wasted energy
04092016 copy cgrahamphysicscom 2016
Wasted energy spreads out into the surroundings ndash this is called dissipated energy
This dissipated energy is too spread out to do useful work and so cannot be re-used
Remember that energy cannot be created or destroyed
This is why it is important to reduce the amount of energy that is wasted
Can you name the energy transfer
copy cgrahamphysicscom 2016
Wasted heatWasted sound and heat
Wasted transpiration
heat
sound
light
electrical
Can you draw the energy flow diagram
04092016 copy cgrahamphysicscom 2016
heat
soundelectrical
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
Can you name the energy transfer
copy cgrahamphysicscom 2016
Wasted heatWasted sound and heat
Wasted transpiration
heat
sound
light
electrical
Can you draw the energy flow diagram
04092016 copy cgrahamphysicscom 2016
heat
soundelectrical
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
heat
sound
light
electrical
Can you draw the energy flow diagram
04092016 copy cgrahamphysicscom 2016
heat
soundelectrical
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
heat
soundelectrical
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
heat
sound
kinetic
chemical
What are the main energy transfers in a car engine
(Donrsquot forget the wasted energy)
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
The runner transfers energy as movement but also in two other ways What are they
+ +chemical (stored)energy
runnerkinetic
(movement)energy
heatenergy
soundenergy
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
When a match is struck what is the energy from the chemicals in its head transferred into What is useful and what isnrsquot useful
+ +chemical (stored)energy
matchheat
energylight
energysoundenergy
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
When you switch a TV on what does it transfer energy from electrical energy into What is useful and what isnrsquot useful
103 Non-useful transfers
electricalenergy
TVheat
energylight
energysoundenergy+ +
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
Can you name this energy example
bull Example (try in your books in pencil)
Energy - 07 - Movie Girl in Human Slingshotavi
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
Key wordsbull Wasted energy ndash energy that has spread out
into surroundings and cannot be reused Energy that is not desired but a by product of energy transfer
bull Useful energy ndash energy that gives the desired outcome
04092016 copy cgrahamphysicscom 2016
