Atmosphere
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Questions and Answers

What is the primary factor that holds the atmosphere near the surface of Earth?

  • Earth's magnetic field
  • Wind patterns
  • The atmosphere's own weight
  • Earth's gravitational attraction (correct)
  • What is the correct definition of the atmosphere?

  • A region of intense heat and pressure
  • A vacuum that exists in outer space
  • A protective layer of gases that shelters all life on Earth (correct)
  • A layer of gases that surrounds the moon
  • How many distinct layers does the atmosphere have?

  • Five (correct)
  • Seven
  • Three
  • Four
  • What is the main purpose of a barometer?

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

    What are the three main constituents of the atmosphere?

    <p>Argon, oxygen, and nitrogen</p> Signup and view all the answers

    What is the characteristic of the atmosphere's boundary with outer space?

    <p>A gradual blending into outer space</p> Signup and view all the answers

    What percentage of air in the atmosphere is found in the troposphere?

    <p>75%</p> Signup and view all the answers

    Which layer of the atmosphere gets warmer as you go higher?

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

    What is the primary reason for the temperature decrease in the troposphere as you go higher?

    <p>The air expands and cools</p> Signup and view all the answers

    In which layer of the atmosphere do satellites orbit the Earth?

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

    What is the ionosphere?

    <p>A series of regions in the mesosphere and thermosphere</p> Signup and view all the answers

    What is the coldest part of the atmosphere?

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

    What is the primary role of the atmospheric layer that is visible to the naked eye?

    <p>To reflect the blue color of the sky</p> Signup and view all the answers

    What is the underlying principle behind the atmosphere's ability to shelter all life on Earth?

    <p>Its ability to block out harmful radiation</p> Signup and view all the answers

    What is the relationship between the atmosphere's density and altitude?

    <p>The atmosphere's density decreases as altitude increases</p> Signup and view all the answers

    What is the primary characteristic of the atmosphere's layers?

    <p>They are determined by changes in temperature</p> Signup and view all the answers

    What is the primary factor that determines the atmosphere's ability to regulate Earth's climate?

    <p>The temperature of the atmosphere's layers</p> Signup and view all the answers

    What is the underlying assumption behind the definition of the atmosphere as a protective layer of gases?

    <p>That it is a dynamic entity</p> Signup and view all the answers

    In the troposphere, what happens to air as it rises?

    <p>It expands and cools</p> Signup and view all the answers

    What is the primary reason for the temperature increase in the thermosphere?

    <p>Absorption of high-energy ultraviolet and X-ray radiation from the sun</p> Signup and view all the answers

    What is unique about the stratosphere in terms of temperature?

    <p>It gets warmer as you go higher</p> Signup and view all the answers

    What is the characteristic of the air in the exosphere?

    <p>It is thin and constantly leaking into outer space</p> Signup and view all the answers

    What is the role of ozone molecules in the stratosphere?

    <p>They absorb high-energy ultraviolet light from the sun and convert it into heat</p> Signup and view all the answers

    In which layers of the atmosphere do the aurora occur?

    <p>Mesosphere and thermosphere</p> Signup and view all the answers

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