Energy Conversions

Why might solar-powered devices have problems running at night?

• They won't have problems

• Because solar-powered devices use the sun for power

• Because it is cooler at night

• Starlight and moonlight will keep them running

A ___________ is something made for a particular purpose.

• Battery

• Fuel

• Device

• Combustion

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___________ is the process of burning a fuel to produce heat and/ or light.

• Deforestation

• Construction

• Elimination

• Combustion

_____________ is a material that releases energy in the form of heat as it is burned.

• Fuel

• Device

• Combustion

• Primary

Select an option which needs energy to function.

• Humans

• Vehicles

• Lamps

• Cities

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What type of energy do plants use to store energy?

• Chemical energy

• Kinetic energy

• Solar energy

• Thermal energy

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Use the picture to help you choose your answer.

What type of energy conversion is happening in the boiler?

• Heat to kinetic

• Kinetic to electrical

• Chemical to heat

• Heat to electrical

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What is a turbine?

• A device that spins as gas flows and changes the heat energy of the steam into energy of motion.

• A device in which coal is burned, building up heat which then changes water to steam.

• A device which produces electricity.

• A device which changes energy of motion into electrical energy.

Energy of motion is also called ______________ energy.

• Kinetic

• Chemical

• Thermal

• Electrical

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What do batteries do?

• They provide portable electrical energy.

• They store chemical energy.

• They convert chemical energy to electrical energy.

• They help power devices like remotes, iPhones, and even cars.