Inspire Science Grade 4 Unit 2 Module 2 Lesson 4 Review

Which method of powering a vehicle will help to reduce air pollution?

• using oil

• using biofuels

• using gasoline

• using diesel fuel

How do solar panels solve a design problems?

• It transforms energy without producing air pollution.

• It transforms sunlight energy to wind energy.

• It uses nonrenewable resources for power.

• It uses biofuels to transform energy.

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Engineers designing a new energy efficient product will make the first moedl, called a _________.

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Kelly is making a solar cell to provide power using a plastic bottle, copper, and salt water. What can Kelly test to make her solar cell better?

• How do additional hours in the sun improve the solar cell?

• How does humidity in the atmosphere improve the solar cell?

• How does adding more salt to the water improve the solar cell?

• How odes the difference in oustide temperature improve the solar cell?

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Suppose you connect a solar cell to the connectors of a lightbulb. Which factor would increase the brightness of the lightbulb?

• the width of the connectors

• the size of the lightbulb

• exposure to full sun

• exposure to partical

an original or first model of something from which other forms are developed

• engineer

• design process

• prototype

• constraint

• criteria

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something that limits or estricts someone or something

• engineer

• design process

• prototype

• constraint

• criteria

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a series of steps that engineers follow to solve a problem

• engineer

• design process

• prototype

• constraint

• criteria

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one who designs solutions to problems

• engineer

• design process

• protoype

• constraint

• criteria

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a standard on which a judgment or decision is based

• engineer

• design process

• prototype

• constraint

• criteria

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