Understanding the Earth's Atmosphere
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Questions and Answers

Which of the following is NOT a property of air mentioned in the text?

  • Has no taste
  • Is colorless
  • Cannot be seen, only felt
  • Visible to the naked eye (correct)

    • What is the approximate thickness of the blanket of air surrounding the Earth known as the atmosphere?

  • 10 km
  • 40 km
  • 30 km
  • 20 km (correct)

    • During which season does the air become very humid according to the text?

  • Rainy season (correct)
  • Summer
  • Winter
  • Spring

    • What serves as indicators of the movement of air according to the text?

    <p>Branches of trees swaying (C)</p> Signup and view all the answers

    Which gas supports combustion, as mentioned in the text?

    <p>Oxygen (A)</p> Signup and view all the answers

    Which of the following gases mentioned is chemically bonded to other gases in the air?

    <p>Carbon dioxide (C)</p> Signup and view all the answers

    What is a notable change in the composition of air during the rainy season?

    <p>Increase in water vapor percentage (D)</p> Signup and view all the answers

    What are some impurities mentioned in the text that can pollute the air?

    <p>&quot;Smoke&quot; and &quot;sulfur dioxide&quot; (C)</p> Signup and view all the answers

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