Energy Review

The number one source of energy on Planet Earth is?

• Fossil Fuels

• Wind

• Geothermal

• Nuclear

• The Sun

At which point does the ball has the greatest gravitational potential energy (GPE)?

• A

• G

• D

• C

• G

You throw a ball into the air as shown in the diagram. At what point does the ball have the most gravitational potential energy?

• W

• X

• Y

• Z

What is mechanical energy?

• It is what metal creates when heated.
• All potential and kinetic energy in a system.
• It is motion of all matter.
• Energy of momentum.

At which point in the picture must the cart have the most MECHANICAL energy?

• Point 1

• Point 2

• Point 3

• They would all be the same

A rubber band that is pulled back waiting to "fly" has what type of energy?

• chemical potential

• electrical potential

• gravitational potential

• elastic potential

When you turn on a lamp, electrical energy is converted to

• radiant energy

• sound energy

• chemical energy

• nuclear energy

In photosynthesis, radiant energy from the sun is converted to ________________ energy in the molecule glucose.

• nuclear

• kinetic

• chemical

• elastic

What is a force that opposes motion when two objects are in contact with each other called?

• applied force

• frictional force

• potential force

• thermal force

The law of Conservation of energy states that energy can be transformed from one form to another, but it cannot be _______ or ________

• transformed, or created

• divided or multiplied

• radiated or conducted

• created or destroyed