Combustion and Processes Quiz

Explain the process of combustion.

• The process by which a substance combines with oxygen to give off heat

• The process by which a substance breaks down into simpler substances

• The process by which a substance absorbs CO2 from the atmosphere

• The process by which a substance is preserved over time without change

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How are combustion, respiration, and decomposition similar to each other?

• They all involve the release of energy without oxygen

• They all involve the absorption of CO2 from the atmosphere

• They all involve the breakdown of substances into simpler forms

• They all involve the combination of substances with oxygen to release energy

What are some processes that take CO2 out of the atmosphere?

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What drives the geologic carbon cycle on Earth?

• The rotation of the Earth around the sun

• The movement of the Earth's tectonic plates

• The gravitational pull of the moon

• The photosynthesis process in plants

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Which of the following is a part of the geologic carbon cycle?

• Respiration by animals

• Chemical weathering

• Decomposition of organic matter

• Absorption of CO2 by animals

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How does the speed of geological processes compare to the growth of fingernails?

• Geological processes are about 10 times faster

• Geological processes are about as fast as fingernails grow

• Geological processes are about half as fast as fingernails grow

• Geological processes are about twice as fast as fingernails grow

What is the impact of the biological carbon cycle on CO2 levels compared to the geologic carbon cycle?

• It has a smaller impact

• It has about the same impact

• It has a bigger impact

• It has no impact

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How does sea surface temperature affect the amount of carbon dioxide in the water?

• Cold water gives off CO2 to the atmosphere

• Warm water absorbs more CO2 from the atmosphere

• Cold water absorbs CO2 from the atmosphere

• Sea surface temperature has no effect on CO2 absorption

What is formed when CO2 combines with rainwater?

• Sulfuric acid

• Nitric acid

• Carbonic acid

• Hydrochloric acid

What is the process called when carbonic acid dissolves rocks such as limestone and marble?

• Physical weathering

• Chemical weathering

• Biological weathering

• Erosion