Energy Use and Conservation

Which is an example of a single energy transformation?

• A toaster converts electrical to thermal energy

• A match converts mechanical to thermal to electromagnetic

• A biker converts chemical to mechanical to thermal

• A car converts chemical to thermal to mechanical

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What is an example of multiple energy transformations?

• Your body transforms chemical to thermal

• Your body transforms chemical to mechanical

• a flashlight converts chemical energy in batteries to electrical to electromagnetic energy in light

• a phone converts electrical to electromagnetic

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According to the Law of Conservation of Energy, when one form of energy is transformed into another, __________ energy is lost in the process

• no

• some

• all

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CANNOT be created or destroyed

• energy

• transformation

• motion

• pendulums

"Energy can be transformed from one form into another or transformed from one region or another, but energy cannot be created or destroyed."
Which law is this?

• Law of Conservation of Mass

• Newton's Second Law

• Law of Conservation of Energy

• Newton's Third Law

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Which energy transformation occurs in a toaster?

• chemical to electric

• electric to thermal

• kinetic to chemical

• thermal to potential

Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?

• Chemical to light

• Electrical to chemical

• Electrical to light

• Chemical to electrical

What energy transformations take place when a battery-operated radio is in use?

• Electrical to chemical to light

• Sound to chemical to mechanical

• Chemical to electrical to sound

• Light to electrical to thermal

Which of the following best describes the energy transformations that occur when a flashlight that runs on batteries is turned on?

• chemical to mechanical to electrical to radiant

• radiant to electrical to sound

• chemical to radiant to mechanical to electrical

• electric to radiant to chemical

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How are different forms of energy related?

• they can all be transformed into other forms of energy

• none of them can be transformed into other forms of energy

• they can be created

• they can be destroyed

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