Energy

Which of the following is a conversion from light energy to chemical energy?

• a. turning on a stove to heat dinner

• b. turning on a lamp

• c. growing an apple tree

• d. making toast in a toaster

The ability to do work

• A. chemical energy

• B. Friction

• C. electrical energy

• D. Energy

Where is the potential energy the greatest?

• A

• B

• C

• D

Four balls are thrown at the same velocity, with different masses. Which ball has the most kinetic energy?

• The 20g ball

• The 50g ball

• The 24g ball

• The 40g ball

The sum of potential energy and kinetic energy equals

• work

• transformation

• total energy

• mechanical energy

Which is the best example that something has kinetic energy?

• a car parked on a steep hill

• a tennis ball rolling across the court

• a picture hanging on the wall

• a piece of coal before it's burned

Complete the following sentence. The ________________ an object moves, the more ____________________ energy it has.

• slower ... potential

• faster .... kinetic

• faster ... potential

• slower ... kinetic

Which of the following is an example of kinetic energy decreasing as the gravitational potential energy increases?

• a person parachuting out of a plane

• a car racing around an oval track

• a person skiing down a hill

• a person walking up a hill

In order to INCREASE the potential energy of an object, you need to:

• put the object lower to the ground

• raise the object higher

What is the formula for Kinetic Energy?

• PE = m*g*h

• KE = 1/2m*v2

• W = F*d

• P = W/t