Topic 5 Human Uses of Energy - Review

Look at the picture of a smokestack. Which word best describes what is coming out of the stack?

• pollutants

• emissions

• scrubber

• nuclear power

Why are scientists concerned about the amount of greenhouse gases released into the air?

• They increase the atmosphere's ability to hold heat.

• They lower the temperatures around the world.

• They contain substances that are harmful to plants.

• They make the environment healthier.

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This picture shows a place where land has been mined for resources. What impact of mining does the picture show?

• Forests and fields are removed.

• Toxic materials are used to force oil and gas to the surface.

• Toxic materials are flowing into water.

• Ash and harmful materials are being released into the air.

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Look at the picture of a power plant. This power plant is releasing water into the nearby stream. What is one possible environmental concern?

• The water may contain greenhouse gases.

• The water may block stream habitats.

• The water may pollute the atmosphere.

• The water may contain pollutants.

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Emma created this diagram showing dirty gas going into a smoke stack and coming out clean. What item has she drawn?

• a water tank

• a smokestack

• a scrubber

• a dam

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A company is transporting natural gas it has mined from Earth. Which statement names a risk of transporting natural gas?

• A leak in a pipeline might release greenhouse gases into the atmosphere.

• A ship collision might release a sticky substance into the oceans.

• A truck collision might make the roads very sticky and hard to clean.

• A leak in a barrel might not be noticed and cause a spill that covers everything it touches.

Look at the picture. What type of energy change occurs with these devices?

• The movement of wind is changed to electrical energy.

• The wind creates chemical energy as it turns the turbine.

• Chemical energy is changed to electrical energy.

• The spinning motion of the blade causes solar energy.

Look at the diagram. Which statement should be placed in the first box?

• Atoms of uranium are split releasing heat energy.

• Decaying plant matter releases heat energy.

• Energy from Earth's hot interior heats water

• Water moves through underground caverns.

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Emma made a poster to show different kinds of renewable energy sources. Which source can be added to her list?

• Nuclear energy

• Biomass

• Coal

• Petroleum

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What does hydropower rely on to create energy?

• heat from Earth's interior

• energy from the sun

• biomass

• flowing water