Earth's Atmosphere Quiz Pt. 1

What is the most abundant gas in the Earth's atmosphere?

• Oxygen

• Argon

• Carbon Dioxide

• Nitrogen

What percentage of the Earth's atmosphere is composed of Oxygen?

• 78%

• 0.9%

• 21%

• 0.04%

Which of the following gases has the lowest percentage in the Earth's atmosphere?

• Nitrogen

• Argon

• Oxygen

• Carbon Dioxide

What is the range of Water Vapor concentration in the Earth's atmosphere?

Which gas is represented by the symbol 'Ar' in the image?

• Nitrogen

• Oxygen

• Argon

• Carbon Dioxide

What percentage of the Earth's atmosphere is composed of Nitrogen?

• 21%

• 78%

• .04%

• .96%

What is the second most abundant gas in the Earth's atmosphere?

• Carbon Dioxide

• Oxygen

• Nitrogen

• Other Gases (mostly Argon)

How does water vapor enter the air?

• Condensation

• Precipitation

• Evaporation

• Sublimation

What does dust consist of?

• Tiny grains of sand and clay

• Tiny grains of pollen, salt crystals, bacteria, industrial chemicals

• Only industrial chemicals

• Only pollen and bacteria

What important role does dust play in the atmosphere?

• It blocks sunlight.

• It helps condensation (forming raindrops).

• It causes air pollution.

• It absorbs water vapor.