Earth's Atmosphere Basics

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Questions and Answers

What is the main reason for global warming?

  • Rising volume of water vapor
  • Absorption of insolation by plants
  • Increasing ozone gas in the atmosphere
  • Burning of fossil fuels (correct)

Which gas acts as a filter and absorbs ultra-violet rays radiating from the sun?

  • Water vapor
  • Carbon dioxide
  • Ozone (correct)
  • Nitrogen

At what altitude is ozone mainly found in the atmosphere?

  • 0-10 km
  • 10-50 km (correct)
  • 100-200 km
  • 50-100 km

What is the source of all kinds of precipitation in the atmosphere?

<p>Water vapor (C)</p> Signup and view all the answers

Where does water vapor have its maximum amount in the atmosphere?

<p>Warm and wet regions (B)</p> Signup and view all the answers

Which gas is transparent to incoming solar radiation but opaque to outgoing terrestrial radiation?

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

What are the two main gases in Earth's atmosphere?

<p>Nitrogen and oxygen (D)</p> Signup and view all the answers

At what height from the Earth's surface is oxygen almost negligible in the atmosphere?

<p>120 km (A)</p> Signup and view all the answers

Which gas is found only up to 90 km from the surface of the Earth?

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

What instrument is used to measure air pressure?

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

How thick is Earth's atmosphere?

<p>480 km (A)</p> Signup and view all the answers

Which gas contributes to most of the remaining part of Earth's atmosphere after nitrogen and oxygen?

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

What percentage of the Earth's atmosphere is composed of oxygen?

<p>21% (B)</p> Signup and view all the answers

Which gas in the Earth's atmosphere cannot be used directly from the air by biotic things?

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

What gas is meteorologically a very important gas in the Earth's atmosphere?

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

In Earth's atmosphere, what role does Argon primarily play?

<p>Mainly used in light bulbs (D)</p> Signup and view all the answers

Which gas plays a major role in the Earth's water cycle and helps keep the climate moderate?

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

What percentage of the Earth's atmosphere is composed of nitrogen?

<p>78% (C)</p> Signup and view all the answers

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