Unit 3 Types of Energy

Energy is ...

• displacement in the direction of motion

• what is needed to do work or cause change

• what stops motion

• the difference between kinetic and potential

Energy produced by the movement of electrons

• Mechanical

• Electrical

• Thermal

• Strong

Energy that causes the transfer of heat between materials

• thermal

• electrical

• mechanical

• potential

Energy that travels as vibrations through the air or other materials.

• Mechanical

• Light

• Thermal

• Sound

What type of energy powers a computer?

• Electrical

• Light

• Sound

• Mechanical

A lamp transforms electrical energy mainly into what two forms of energy?

• Light and sound

• Light and thermal

• Light and potential

• Sound and thermal

Using a hand crank to sharpen a pencil uses what type of energy?

• Electrical

• Potential

• Kinetic

• Thermal

What type of energy allows you to see yourself in a mirror.

• Light

• Sound

• Electrical

• Thermal

When you push a lawn mower, you are turning chemical energy from your food into ____________ energy.

• potential

• sound

• electrical

• kinetic

True or false? Energy can change from one form to another.

• True

• False