Energy Transformation Q

What best describes the energy conversion that takes place in a microwave oven?

• electrical to light to thermal

• chemical to thermal to light

• nuclear to thermal to chemical

• electrical to thermal to sound

What is the best example of a machine that converts electrical energy into kinetic energy and sound energy?

• electric toothbrush

• a flashlight

• toaster

• iron

Where is the kinetic energy the greatest?

• A

• B

• C

• D

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Which object shows an energy transformation from electrical to mechanical?

• 
• 
• 
• 

What is the energy transformation that occurs in an electric pencil sharpener?

• mechanical energy to electrical energy

• radiant energy to sound energy

• electrical energy to mechanical energy

• chemical energy to mechanical energy

What energy transformation occurs when a crock pot is plugged into an outlet and then the control knob is turned "on"?

• thermal to electrical

• electrical to thermal

• mechanical to thermal

• electrical to sound

According to the Law of Conservation of Energy, energy cannot be _________ or ____________.

• destroyed, destroyed

• created, destroyed

• created, saved

• lost, found

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Electrical Energy is transferred to _____ Energy.

• Electrical

• Solar

• None

• Thermal

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A hairdryer converts --

• electrical energy into chemical

• chemical energy into mechanical

• electrical energy into thermal

• electrical into mechanical and thermal

The roller coaster cart has the most kinetic energy at position-

• W

• X

• Y

• Z

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