11.1 Earth And The Atmosphere

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    11.The air we breathe is made of 78% ___.

    • Argon
    • Nitrogen
    • Oxygen
    • Neon
    • Carbon dioxide
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About This Quiz

This quiz will determine how well you know the atmosphere around you!

Atmospheric Science Quizzes & Trivia

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  • 2. 

    Which is a characteristic of the troposphere?

    • It is the hottest layer of the atmosphere.

    • It is the coldest layer of the atmophere.

    • It contain the fewest number of air molecules.

    • It contains the greatest number of air molecules.

    Correct Answer
    A. It contains the greatest number of air molecules.
    Explanation
    The troposphere is the lowest layer of the atmosphere, extending from the Earth's surface up to about 10-15 kilometers. It is characterized by a decrease in temperature with increasing altitude. This layer contains the greatest number of air molecules compared to the other layers of the atmosphere. As we move higher up in the atmosphere, the density of air molecules decreases. Therefore, the troposphere is the layer where most of the Earth's weather occurs, as it is the layer where the majority of air molecules are present.

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  • 3. 

    Which layer of the atmosphere is the deepest?

    • Exosphere

    • Stratosphere

    • Mesosphere

    • Ionosphere

    Correct Answer
    A. Exosphere
    Explanation
    The exosphere is the outermost layer of the Earth's atmosphere and is located above the thermosphere. It extends from about 500 kilometers above the Earth's surface to the edge of space. It is considered the deepest layer because it is the farthest from the Earth's surface. The exosphere is characterized by extremely low density and contains very few particles. It is where satellites and other spacecraft orbit the Earth.

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  • 4. 

    ___ is a gas present in the atmosphere that is constantly changing based on weather conditions and location.

    • Carbon dioxide

    • Oxygen

    • Methane

    • Water vapor

    Correct Answer
    A. Water vapor
    Explanation
    Water vapor is a gas that is constantly changing in the atmosphere due to weather conditions and location. It can exist in the form of invisible gas or as visible clouds, depending on factors such as temperature and humidity. Water vapor plays a crucial role in the Earth's weather system, as it can condense to form clouds and precipitation. Its concentration in the atmosphere varies greatly, making it a dynamic component of the Earth's atmosphere.

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  • 5. 

    Which layer contains the coldest temperatures known to man?

    • Stratosphere

    • Ionosphere

    • Exosphere

    • Mesosphere

    • Troposphere

    Correct Answer
    A. Mesosphere
    Explanation
    The mesosphere is the layer of the Earth's atmosphere located above the stratosphere and below the thermosphere. It is known to contain the coldest temperatures known to man. The temperatures in this layer can drop as low as -90 degrees Celsius (-130 degrees Fahrenheit). This is due to the thinness of the air and the lack of heat-trapping gases. The mesosphere is also the layer where meteors burn up upon entering the Earth's atmosphere.

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  • Current Version
  • Mar 18, 2022
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 08, 2008
    Quiz Created by
    Pvazquez
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