Question 1

In the figure above, what is the first energy conversion that occurs?

Accepted Answer

chemical energy to light (radiant) energy

Answer

chemical energy to electrical energy

Answer

light (radiant) energy to thermal energy

Answer

thermal energy to electric energy

Question 2

During a soccer game, a player kicks the winning goal. When is work being done by the player?

Accepted Answer

when the ball flies through the air

Answer

when the player's foot is in contact with the ball

Answer

when the player moves toward the ball

Answer

when the player's foot continues to move after touching the ball

Question 3

Which is a statement of the law of conservation of energy?

Accepted Answer

Energy can never be created or destroyed.

Answer

Energy can be destroyed, but never created.

Answer

Energy can be created and destroyed when it changes form.

Answer

Energy can be destroyed but not created.

Question 4

According to the diagram, which renewable resource generates the greatest amount of energy?

Accepted Answer

wind

Answer

biomass

Answer

coal

Answer

natural gas

Question 5

According to the diagram, which percentage of energy generation is produced by fossil fuels?

Accepted Answer

57.1%

Answer

78%

Answer

48%

Answer

45.1%

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