Energy Conversion Questions

Which of the following is the best definition of generator?

• A machine that makes energy

• A machine that converts mechanical energy to electrical energy

• A machine that makes electricity

• The ability to do work or cause change

How is a turbine the opposite of a fan?

• A turbine can only be used outside, while a fan can only be used inside.

• One uses mechanical energy to function, while the other uses light energy to function.

• A turbine uses wind to make electricity, while a fan uses electricity to make wind.

• They are not opposites. They are the same thing.

How do batteries work?

• They store mechanical energy to be converted to chemical energy.

• They store electrical energy to be converted to chemical energy.

• They store mechanical energy to be converted to electrical energy.

• They store chemical energy to be converted to electrical energy.

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Which types of energy are involved when a toaster oven toasts bread?

• Heat and electrical

• Mechanical and chemical

• Heat and light

• Sound and heat

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Which of the following is not commonly used to produce electrical energy?

• Mechanical energy

• Light energy

• Chemical energy

• Sound energy

In which section can the reader learn about wind turbines?

• What is Energy?

• Stationary Bikes

• Electrical Energy

• Sound Energy

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NGSS.MS-PS3-5

What can you infer about the sounds produced when a hammer hits a nail?

• Some mechanical energy is converted to light energy.

• Some mechanical energy is converted to sound energy.

• Some mechanical energy is converted to chemical energy.

• No mechanical energy is being converted.

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Which of the following best describes the text structure of this article?

• Chronological

• Informational

What is the main idea of the selection?

• Energy is regularly converted through its various forms which are all important to the everyday lives of living things.

• Electrical energy can be used to produce light, sounds, and heat and can be produced through chemicals, mechanical energy, and solar energy.

• A generator is used to convert one type of energy to electricity for humans to use.

• When wind moves turbines, that mechanical energy can be converted to electricity. Solar panels capture the energy in sunlight and use it to make electricity.

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Describe the energy conversions involved in turning on a battery-powered flashlight.

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