Energy

6th Grade

Energy• The ability to do work or cause

change

Law of Conservation of Energy

• Energy cannot be created nor destroyed

Examples of Potential Energy

• By looking at these examples, what do you think potential energy is?Stored Energy!

What is potential energy?

• Stored energy – energy that is not in motion

• Roller Coaster EX: – http://www.teachersdomain.org/asset/

mck05_int_rollercoaster/

Examples of Kinetic Energy

• What do all of these pictures have in common?They’re in motion

What is kinetic energy?• Energy in motion• Examples of potential vs kinetic:

– Youtube.com

PE vs. KE Video clips• http://www.youtube.com/watch?

v=7K4V0NvUxRg• http://www.youtube.com/watch?

v=uO5LhU29udk

Thermal Energy

What is Thermal Energy?

• The energy of heat– It transfers from hotter objects to cooler

objects

Temperature• The measure of how hot or how cold

something is

Conduction

What is Conduction?• The transfer of heat that occurs

when 2 objects of different temperature touch

Conductor

What is a Conductor?• A substance that heat or electricity

can easily flow through

Insulator

What is an Insulator?• A material that protects or resists the

transfer of heat, electricity or noise

Convection

Convection• The transfer of warm air up and cool

air down in a circular motion

What do you think is making the warm air rise & the cool

air sink?

So, what’s more dense…warm air or cool air?

Cool air = more dense

Warm air = less dense

Radiation

What is Radiation?• The transfer of heat through empty

space

Identify the following as conduction, convection, or

radiation:• Heat we feel from the sun

Identify the following as conduction, convection, or

radiation:• The heat you feel when you touch a

hot stove

Identify the following as conduction, convection, or

radiation:• Heat you feel when you touch a cup

of hot chocolate

Identify the following as conduction, convection, or

radiation:• This is responsible for making

macaroni rise and fall in a pot on the stove

Identify the following as conduction, convection, or

radiation:• Heat you feel when you sit around a

campfire

Energy Transformation

Chemical Energy• Energy that is released during a

chemical reaction or change• Type of Potential Energy• Examples:

– Batteries– Burning Wood – Coal– Oil– Eating Food

Electrical Energy• Energy in the form of electricity• Type of Kinetic Energy• Examples:

– Plugging in a PS3 to the wall

Light Energy• Energy in the form of

electromagnetic waves• Type of Kinetic Energy• Examples:

– A flash light turning on

Mechanical Energy• Energy of motion• Type of Kinetic Energy• Examples:

– Machines– Batting Cage– Running

Thermal Energy• Heat energy• Type of Kinetic Energy• Examples:

– Microwave– Stove

Nuclear Energy• Energy that is released when the

nuclei of atoms are split or combined• Type of Potential Energy• Examples:

What type of energy transformation is this?

Potential Energy

Kinetic Energy

• What energy transformation does a flashlight go through when its turned on?

Chemical Electrical Light

• What energy transformation do you have when you eat & then go lift weights?

Chemical Mechanical