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The atmosphere - revision

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    The Earth's atmosphere (revision) 1ºESO Biologý and Geology
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  • This gas makes up 21% of the dry air
    Oxygen
  •  15
  • Which gas makes up approximately 1% of the atmosphere?
    Argon
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  • What formed the early atmosphere?
    Volcanic activity
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  • What caused the amount of carbon dioxide to decrease and the amount of oxygen to increase in the early atmosphere?
    Photosynthesis
  •  25
  • Approximately what percentage of the air is carbon dioxide?
    0.037%
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  • Which is the correct order of the atmosphere layers from Earth to space?
    troposphere, stratosphere, mesosphere, thermosphere, exosphere
  •  15
  • What atoms make up an ozone molecule?
    3 oxygen atoms
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  • This layer of the atmosphere contains the ozone layer
    Stratosphere
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  • This layer is where weather occurs
    troposphere
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  • What does the ozone layer protects us from?
    harmful UV rays.
  •  15
  • The layers of the atmosphere are classified according to changes in...
    temperature with height
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  • Why does atmospheric temperature increase with altitude in the stratosphere?
    because of the presence of the ozone layer
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  • In the troposphere, temperature _______________ with altitude. a) decreases b) increases c) stays the same d) changes randomly
    a) decreases
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  • Earth is the only known planet with an atmosphere.
    False
  •  15
  • What is the fourth atmospheric layer from the ground?
    Thermosphere
  •  15
  • What happens to temperature as you go higher in the stratosphere? a) It stays the same b) It gets colder c) It gets hotter d) It is always changing
    c) It gets hotter
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