Earth's Atmosphere Layers and Characteristics

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Questions and Answers

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

  • 90%
  • 78%
  • 100%
  • 99% (correct)

Which of the following is NOT a way that thermal energy is transferred in Earth's atmosphere?

  • Convection
  • Evaporation (correct)
  • Radiation
  • Conduction

What is the top-most layer of Earth's atmosphere called?

  • Stratosphere
  • Mesosphere
  • Troposphere
  • Exosphere (correct)

What is the purpose of Earth's atmosphere?

<p>All of the above (D)</p> Signup and view all the answers

What causes wind in Earth's atmosphere?

<p>The movement of air (B)</p> Signup and view all the answers

What happens when a hot air mass begins to rise into the atmosphere?

<p>A mass of cooler, denser air moves in to replace it (C)</p> Signup and view all the answers

What is the primary factor that affects the amount of water vapor in the air?

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

Which of the following gases occur naturally in Earth's atmosphere?

<p>Both (a) and (c) (B)</p> Signup and view all the answers

What is the primary cause of increasing greenhouse gas emissions and rising global temperatures?

<p>Human activities like burning fossil fuels (A)</p> Signup and view all the answers

What is the term used to refer to the particles of solids and liquids floating in the atmosphere?

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

Which layer of the atmosphere is described as the lowest layer, where clouds and weather occur?

<p>Troposphere (B)</p> Signup and view all the answers

How can you convert kilometers to an approximation of miles?

<p>Divide by 2 and add 10% (A)</p> Signup and view all the answers

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