Science 8 U4 KE/PE Review

The faster an object moves, the ________ kinetic energy it has. 

• more
• less
• none of the above
• all of the above 

What would have the greatest kinetic energy?

• A car driving down a hill.
• A person running down a hill. 
• A ball rolling down a hill. 

Which is the best example that something has kinetic energy?

• a. a car parked on a steep hill 
• b. a tennis ball rolling across the court
• c. a picture hanging on the wall 
• d. a piece of coal before it's burned 

What is kinetic energy?

• energy of work
• energy of motion
• energy of gravity
• energy of power

Can energy be destroyed?

• no
• yes

Energy can not be created or destroyed, only converted from one form to another.

• true
• false

What is potential energy?

• The energy an object has due to its atomic structure.

• The energy an object has due to its chemical composition.

• The energy an object has due to its motion.

• The energy an object has due to its position or condition.

When does an object have no kinetic energy?

• When it's at rest.

• When it's moving very slowly.

• When the only force that's acting on it is gravity.

• When it has no electrical charge.

Which object has the most potential energy?

• A ball resting on the ground.

• A ball being thrown at 100 miles per hour.

• A ball on top of a refrigerator.

• A ball resting on the edge of a cliff.

Four cars are positioned at the top of a hill. Which car has the most potential energy?

• A

• B

• C

• D