Energy

What is energy?

• moving energy

• stored energy

• renewable energy

• The ability to do work.

What is potential energy?

• moving energy

• stored energy

• renewable energy

• non renewable energy

What is kinetic energy?

• moving energy

• potential energy

• stored energy

• renewable energy

A kid applies a force of 70 N to a ball over 1.1 meters. How much work did he do on the ball? 

• 77 J
• 7.7 J 
• 0.7 J 
• 770 J 

You do 90 joules of work in 30 seconds. How much power have you generated?

• 30 watts
• 3 watts
• 120 watts
• 270 watts

At which point of the roller coaster is potential energy the greatest?

• W

• X

• Y

• Z

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

• more

• less

When is the potential energy the greatest in a roller coaster?

• a. at the bottom of the first hill
• b. at the top of the first hill
• c. at the top of the second hill
• d. at the bottom of the second hill

When you eat fruits and vegetables, chemical bonds are releasing stored energy, this is...

• a. thermal energy

• b. sound energy

• c. electrical energy

• d. chemical energy

Any time an energy conversion takes place, some of the original energy is converted to which one of the following?

• a. sound energy
• b. potential energy
• c. light energy
• d. thermal energy