Earth's Atmosphere: Dr. Sandip Mondal
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Questions and Answers

What percentage of Earth's atmosphere is made up of nitrogen gas?

  • 0.9%
  • 0.03%
  • 78% (correct)
  • 21%
  • Which gas makes up the second most abundant in Earth's atmosphere?

  • Water vapor
  • Argon
  • Carbon Dioxide
  • Oxygen (correct)
  • Where does over ¾ of the atmosphere by mass lie?

  • In the warm and wet tropics
  • In the lowest 80km level
  • In the lowest 33,000 ft (correct)
  • In the desert and polar regions
  • What is the total mass of the Earth's atmosphere (in grams)?

    <p>5.3x10^21</p> Signup and view all the answers

    What is the primary function of the Earth's atmosphere in relation to high-energy radiation and the vacuum of space?

    <p>Protects from high-energy radiation and frigid vacuum of space</p> Signup and view all the answers

    What is the range of water vapor content in the atmosphere based on geographic location and climatic conditions?

    <p>1% to 4%</p> Signup and view all the answers

    What is the term used to describe the layer of the atmosphere that extends up to 80km above the surface?

    <p>Homosphere</p> Signup and view all the answers

    Why are particles in the air important?

    <p>Act as condensation and freezing nuclei</p> Signup and view all the answers

    Which of the following gases is found in the atmosphere near the surface and can be up to 10 ppmv in the stratosphere?

    <p>Ozone (O3)</p> Signup and view all the answers

    Which layer of the atmosphere is characterized by strong vertical mixing, overturning, turbulence, and weather phenomena?

    <p>Troposphere</p> Signup and view all the answers

    What is the boundary between the troposphere and the stratosphere called?

    <p>Tropopause</p> Signup and view all the answers

    What is the force per unit area exerted into a surface by the weight of air above that surface in the atmosphere of Earth called?

    <p>Atmospheric pressure</p> Signup and view all the answers

    Which layer of the atmosphere is stable, dry, and almost free from weather occurrence?

    <p>Stratosphere</p> Signup and view all the answers

    What is the term used to describe a liquid or solid dispersed in a gas, usually air?

    <p>Aerosol</p> Signup and view all the answers

    What is the term for parts per million by volume?

    <p>ppmv</p> Signup and view all the answers

    Which layer of the atmosphere lies below an altitude of 5.6 km?

    <p>Troposphere</p> Signup and view all the answers

    What is the total mass of the Earth's atmosphere in grams?

    <p>5.3x10^21</p> Signup and view all the answers

    What is the primary function of the Earth's atmosphere in relation to high-energy radiation and the vacuum of space?

    <p>Protects from high-energy radiation and the frigid vacuum of space</p> Signup and view all the answers

    What percentage of Earth's atmosphere is made up of nitrogen gas?

    <p>78.5%</p> Signup and view all the answers

    Which gas makes up the second most abundant in Earth's atmosphere?

    <p>Oxygen</p> Signup and view all the answers

    Which layer of the atmosphere lies below an altitude of 5.6 km?

    <p>Troposphere</p> Signup and view all the answers

    What is the term used to describe a liquid or solid dispersed in a gas, usually air?

    <p>Aerosol</p> Signup and view all the answers

    What is the composition of ozone (O3) near the Earth's surface?

    <p>500 ppmv</p> Signup and view all the answers

    What is the primary function of the homosphere in the atmosphere?

    <p>Regulating air pressure</p> Signup and view all the answers

    What makes up the lowest layer of the hetersphere in the atmosphere?

    <p>Molecular nitrogen</p> Signup and view all the answers

    At what altitude does the boundary between the troposphere and the stratosphere occur?

    <p>50 km</p> Signup and view all the answers

    What is the environmental lapse rate in the troposphere?

    <p>$6.5°C/km$</p> Signup and view all the answers

    What is the percentage of Earth's atmosphere that lies below an altitude of 5.6 km?

    <p>90%</p> Signup and view all the answers

    What is the term used to describe a liquid or solid dispersed in a gas, usually air?

    <p>Aerosol</p> Signup and view all the answers

    What is the force per unit area exerted into a surface by the weight of air above that surface in the Earth's atmosphere called?

    <p>$1 atm$</p> Signup and view all the answers

    Which layer of the atmosphere is almost free from weather occurrence and characterized by stability and dryness?

    <p>Stratosphere</p> Signup and view all the answers

    What is the term used to describe parts per million by volume?

    <p>ppmv</p> Signup and view all the answers

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