Atmospheric Science Quiz

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Questions and Answers

What is the mole fraction of oxygen in dry air?

  • 0.04%
  • 20.95% (correct)
  • 78.08%
  • 0.93%

What is the approximate average water vapor content in the atmosphere at sea level?

  • 0.93%
  • 1% (correct)
  • 0.4%
  • 0.04%

Which gas makes up the largest mole fraction in dry air?

  • Argon
  • Nitrogen (correct)
  • Oxygen
  • Carbon dioxide

What role does the Earth's atmosphere play in reducing temperature extremes between day and night?

<p>Retaining heat through the greenhouse effect (D)</p>
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At what altitude do air composition, temperature, and atmospheric pressure vary?

<p>Troposphere (D)</p>
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What is the approximate mole fraction of nitrogen in dry air?

<p>78.08% (A)</p>
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What is the approximate mole fraction of oxygen in dry air?

<p>20.95% (D)</p>
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What is the approximate mole fraction of argon in dry air?

<p>0.93% (C)</p>
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What is the approximate mole fraction of carbon dioxide in dry air?

<p>0.04% (B)</p>
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What is the average water vapor content in the atmosphere at sea level?

<p>1% (B)</p>
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