SCIENCE REVIEW

This is earth's main source of light and heat:

• solar energy

• kinetic energy

• chemical energy

• mechanical energy

Light energy often provides ____________ energy.

• mechanical

• kinetic

• heat

Natural gas, petrol, oil and fuel are all _________________ energy

• renewable

• nonrenewable

Wind energy is ________

• renewable

• nonrenewable

Boys use __________ energy when playing, jumping, climbing

• sound

• thermal

• kinetic

• light

 What is the energy transformation?

sun ----> apple tree

• solar---> kinetic

• chemical ---> solar

• solar--->chemical

• kinetic --->solar

______ energy is the energy an object has due to its motion. 

• electrical

• kinetic

• sound

Energy that can be seen..

• thermal

• light

• kinetic

• potential

Energy generated by the movement of the air

• water energy

• wind energy

• light energy

• sound energy

Negative charges and positive charges

• complete each other

• repel each other

• attract each other