Second Semester Exam Study Guide

The two main components of the atmosphere are:

• Oxygen and Carbon Dioxide

• Nitrogen and Oxygen

• Hydrogen and Helium

• Nitrogen and Carbon Dioxide

What percentage of the atmosphere is dry air?

• 21%

• 78%

• 99%

• 100%

What percentage of the atmosphere is water vapor?

• 0-4%

• 10-20%

• 25-30%

• 50-60%

How are nitrogen and oxygen removed and returned to the atmosphere?

• Through the processes of photosynthesis and respiration

• By volcanic eruptions and earthquakes

• By precipitation and evaporation

• Through the water cycle only

What percentage of the atmosphere is water vapor? How does it vary?

• Water vapor makes up about 0-4% of the atmosphere and varies with location and temperature.

• Water vapor makes up about 20% of the atmosphere and is constant everywhere.

• Water vapor makes up about 50% of the atmosphere and only varies with altitude.

• Water vapor makes up about 78% of the atmosphere and does not vary.

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The processes involved in the water cycle are:

• Evaporation, condensation, and precipitation

• Photosynthesis, respiration, and transpiration

• Melting, freezing, and sublimation

• Erosion, deposition, and weathering

Tags

NGSS.MS-ESS2-4

What are the two processes involved in carbon dioxide cycling?

• Photosynthesis and respiration

• Evaporation and condensation

• Transpiration and precipitation

• Combustion and melting

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The two leading gases involved in the greenhouse effect are:

• Oxygen and Nitrogen

• Carbon Dioxide and Methane

• Hydrogen and Helium

• Argon and Neon

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The concentration of carbon dioxide is rising because:

• Plants are producing more oxygen

• Humans are burning more fossil fuels

• The sun is getting hotter

• The Earth's gravity is increasing

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Aerosols are:

• Solid or liquid particles suspended in a gas

• A type of gas

• A form of energy

• A type of bacteria