What are the two main components of the atmosphere?

• A) Carbon dioxide and water vapor

• B) Nitrogen and oxygen

• C) Hydrogen and helium

• D) Methane and ozone

What percentage of the atmosphere is dry air?

• A) 2%

• B) 50%

• C) 99%

• D) 75%

What percentage of the atmosphere is water vapor?

• A) 10%

• B) 50%

• C) 2%

• D) 25%

Tags

NGSS.MS-ESS2-4

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

• A) Photosynthesis and respiration

• B) Evaporation, conduction, and precipitation

• C) Combustion and condensation

• D) Erosion and deposition

Tags

NGSS.MS-ESS2-1

What are the processes involved in the water cycle?

• A) Photosynthesis and respiration

• B) Evaporation, condensation, precipitation

• C) Combustion and erosion

• D) Melting and freezing

Tags

NGSS.MS-ESS2-4

What are the two leading gases involved in the greenhouse effect?

• A) Oxygen and nitrogen

• B) Carbon dioxide and water vapor

• C) Methane and ozone

• D) Hydrogen and helium

Tags

NGSS.MS-ESS3-5

Why is the concentration of carbon dioxide rising?

• A) Increased volcanic activity

• B) Increased plant growth

• C) Increased due to human activities, mainly burning fossil fuels and deforestation

• D) Decreased ocean absorption

Tags

NGSS.HS-ESS2-6

NGSS.HS-ESS3-5

What are aerosols?

• A) Large solid particles

• B) Tiny solid or liquid particles suspended in the air

• C) Gaseous pollutants

• D) Water droplets only

What does the aerosol include?

• A) Only water vapor

• B) Dust, pollen, smoke, and even cloud droplets

• C) Only carbon dioxide

• D) Only nitrogen

How are aerosols released?

• Through climate naturally and through human activities

• Only through volcanic eruptions

• Exclusively by human activities

• By ocean currents