Chemistry of Climate Change Unit Practice

What is the carbon cycle?

• the series of processes by which carbon compounds are interconverted in the environment

• When fossil fuels are burned

• Photosynthesis

• The process of carbon moving between the land and air, causing climate change.

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What is a greenhouse gas?

• A gas that can absorb UV light

• A gas that can absorb infrared light

• A gas that can absorb visible light

• A gas found in a greenhouse

Which of the following is NOT a greenhouse gas?

• Ozone

• Chlorofluorocarbons

• Nitrogen

• Methane

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What is the greenhouse effect?

• Climate change

• The sole source of heat for Earth

• The process in which heat is trapped in the atmosphere.

• A natural process that traps air in the atmosphere.

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Global warming is the

• process of using greenhouse gases to trap heat in the atmosphere

• observed and predicted rise in Earth's average surface temperature

• change in global weather patterns

• melting of the polar ice caps.

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A greenhouse gas has the unique ability to

• move through the atmosphere

• act like the sun

• absorb heat

• stay in one place in the atmosphere

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By what amount did carbon dioxide in earth's atmosphere increase between 1960 and 2000?

• 40 - 50 ppm

• 60 - 70 ppm

• 110 - 120 ppm

• 360 - 370 ppm

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The average temperature of the surface of Earth has increased approximately 1 °C in the past century. Which reason best explains this increase in temperature?

• higher levels of carbon dioxide and other greenhouse gases in the atmosphere

• lower levels of ozone in the atmosphere

• higher levels of oxygen in the atmosphere

• lower levels of nitrogen in the atmosphere

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When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.

• Water
• Atmosphere
• Sun
• Air

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All of the carbon in existence is continually recycled in the carbon cycle

• True
• False

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