Unit 07 Test Review: Human Impact through Emissions

What effect do aerosols have on the climate?

• They have no effect

• They only cool the atmosphere

• They can reflect solar energy back to space and trap heat

• They only warm the atmosphere

Which of the following is true about CFCs?

• They are toxic and flammable

• They are non-toxic and non-flammable

• They are toxic but non-flammable

• They are non-toxic but flammable

What is the definition of "emission" as described in the learning material?

• The release of gases and particles into the air by various sources

• The absorption of gases by plants

• The conversion of gases into liquid form

• The storage of gases in underground reservoirs

Which of the following is a source of emissions?

• Trees

• Factories

• Oceans

• Mountains

What happens to sunlight when it reaches Earth according to the learning material?

• It is completely absorbed by the oceans

• It is absorbed and then released back into the atmosphere

• It is reflected back into space without any absorption

• It is stored in the Earth's core

What is the effect of fossil fuels on the atmosphere as mentioned in the learning material?

• They reduce the amount of greenhouse gases

• They increase the amount of greenhouse gases

• They have no effect on the atmosphere

• They cool the atmosphere

What is the impact of global warming on Earth's climate?

• It stabilizes the climate

• It causes more extreme weather patterns

• It reduces the frequency of storms

• It cools the polar regions

What is one effect of greenhouse gases on Earth's surface?

• Warming the Earth's surface

• Cooling the Earth's surface

• Increasing Earth's gravity

• Decreasing Earth's rotation speed

Which of the following is NOT a source of heavy metals?

• Volcanic activity

• Weathering of rocks

• Photosynthesis

• Agricultural runoff

Which of the following is a natural source of heavy metals?

• Volcanic activity

• Plastic waste

• Nuclear power plants

• Solar flares