Energy

What is kinetic energy?

• The energy of motion
• A combination of two types of energy
• Stored energy
• How far something goes in a specific time

What is potential energy?

• The energy of motion
• A combination of two types of energy
• Stored energy
• How far something goes in a specific time

"As a roller coaster moves around a track, it sometimes has potential energy, it sometimes has kinetic energy, and it sometimes has both." What is this an example of?

• Energy changes
• Energy transfer

"A rolling marble has kinetic energy. If a moving marble hits a stationary marble, it transfers some of its kinetic energy, and the second marble begins to move." What is this an example of?

• Energy changes
• Energy transfer

Look at the cars on the ramp example. What happens when the person lets the cars go?

• Potential energy turns to kinetic
• Kinetic energy turns to potential
• The energy transfers to the ramp
• The energy transfers to the person

How do you increase the potential energy of the toy?

• By turning the knob and tightening the spring
• By releasing the knob
• By letting it sit for longer
• By turning the toy off

Stretching a rubber band is an example of...

• Potential energy
• Kinetic energy
• Mechanical energy

Energy makes everything happen in the universe. 

• True
• False

Not all living things need energy to move, grow, and change.

• True
• False

Which of the following has potential energy?

• A roller coaster at the top of a hill
• A rolling marble
• A running dog