Forms of Energy

What is energy?

• Anything that radiates light or heat

• Anything that travels in the form of a wave

• Any object in motion

• Anything that can cause change

Which of these objects has kinetic energy?

• A ball moving through the air

• A ball sitting on a table

• A ball buried underground

• A ball sitting on the edge of a cliff

What is the difference between kinetic energy and potential energy?

• Potential energy is stored energy; kinetic energy is the energy of motion

• Kinetic energy is stored energy; potential energy is the energy of motion

• Potential energy has to do with chemistry; kinetic energy has to do with physics

• Kinetic energy has to do with chemistry; potential energy has to do with physics

Which of the following objects has the most potential energy?

• A ball sitting on a table

• A ball resting on the ground

• A ball sitting on a mountaintop

• A ball that's been thrown into the air

Molecules can have each of these forms of energy, except:

• Light energy

• Chemical energy

• Sound energy

• Kinetic energy

When you lift an object, you're using __________ energy that was stored in your body.

• Mechanical

• Chemical

• Thermal

• Electrical

The Sun is a source of _______ energy.

• Potential

• Electrical

• Mechanical

• Light

Rubbing two objects together generates _____ energy.

• Potential

• Light

• Thermal

• Chemical

What do sound energy and thermal energy have in common?

• They both involve the movement of molecules

• They are both forms of potential energy

• They both release light

• They are both forms of chemical energy

How do dams generate electricity?

• By capturing thermal energy from water

• By combining chemicals with water

• By evaporating water

• By harnessing mechanical energy from water