ENERGY

Living things and non-living things need energy

Energy to

Living things need energy to carry out life processes

grow

move

reproduce

make food

Non-living things need energy to do work

Energy stored in most of energy resources

Source of energy

Forms of energy

Kinetic energy

Potential energy

Light energy

Heat energy

Sound energy

Electrical energy

Kinetic energy is the form of energy a moving object possesses

The faster an object move, the greater its kinetic energy

An object has potential energy when it stores energy

Potential energy

Chemical potential energy

Gravitational potential energy

Food, fuels, dry cells

Object position

- Object mass - Height from

the ground

stored in because of

depend on

Light is a form of energy that allows us to see

We can see object if it reflects light or if it source of light which then enters our eyes.

Plants use light energy to make food

Heat is form of energy that flows from a region of higher temperature to lower temperature

Temperature is a measure of hotness or coldness an object

Heat

- the Sun - volcano - geyser - electrical appliances - burning fuels

- to cook food - to boil water - to catch fire - to change states of

matter

source uses for

Sounds is a form of energy that can be detected by our ears

sound

communication can use

can produced - human activities - musical instruments - speaker of music

system

Why our ears can detect sound energy?

Sound can travel

through

Air

Solids

Liquids

Electrical energy is energy stored in electric field

Electric field

Power station

How power station produced electricity?

Dry cells

Solar panel

Conversion of Energy

Energy is used by transform its energy

Chemical potential energy

Electrical energy

Light energy

Heat energy

Energy can’t be created or destroyed, but

Energy can be converted from one to another