Work and Energy Quiz

Which of the following processes requires the least amount of work?

• Lifting a 25 kg backpack off the ground

• Carrying a 30 kg box from your car to in school

• Pushing a 50 kg sled at football practice

• Pulling a 25 kg door open

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When using a simple machine, the amount of work that you put into the system is called what?

• Work

• Output

• Input

• Power

When using a simple machine, the amount of work that the machine does is called what?

• Work

• Output

• Input

• Power

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The law of conservation of energy states that energy…

• Energy can only be converted into heat

• Is created from motion

• Cannot be created or destroyed

• Is always equal and opposite

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When hiking up a hill, Jack gets to the top in 5 minutes and Jill gets to the top in 3.5 minutes. If they are the exact same weight, who generates the most power?

• Jack generates more power

• Jill generates more power

• They generate the same amount of power

• Neither of them generate any power

What is the metric unit for power?

• Newton

• Kilogram

• Joule

• Watt

The music coming from a guitar is an example of:

• Sound Energy

• Nuclear Energy

• Thermal Energy

• Radiant Energy

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Heating up some pizza rolls in the microwave uses:

• Sound Energy

• Elastic Energy

• Thermal Energy

• Radiant Energy

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Your phone charger uses __________________________ to charge your phone.

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The sun is powered by __________________________.

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