4-Unit 2b Lesson 4 Test

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

• using oil

• using biofuels

• using gasoline

• using diesel fuel

How does the solar panel solve a design problem?

• 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.

Engineers designing a new energy efficient product will make the first model, called a __________.

• prototype

• blueprint

• sketch

• draft

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 does the difference in outside temperature improve the solar cell?

What do a solar panel, a windmill, and a battery have in common?

• They all convert energy into electricity.

• They all store energy.

• They all produce light.

• They all use water to generate power.

How is a solar panel different from a windmill and a battery?

• It converts light energy into electricity.

• It converts chemical energy into electricity.

• It converts kinetic energy into electricity.

• It stores energy for later use.

What type of energy does a windmill convert into electricity?

• Light energy

• Chemical energy

• Kinetic energy

• Thermal energy

What type of energy does a battery convert into electricity?

• Light energy

• Chemical energy

• Kinetic energy

• Solar energy

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 partial sun

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

• Constraint

• Engineer

• Prototype

• Criteria