Unit 2: The Atmosphere - Gases in the Atmosphere

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1. Why are the water vapour levels higher in summer?

  • Hotter average temperatures and more average rainfall
  • Hotter average temperatures and longer day hours
  • Hotter average temperatures and less average rainfall
  • Longer day hours and less average rainfall
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Other questions in this quiz

2. What percentage, on average, of the air is nitrogen?

  • 78%
  • 76%
  • 57%
  • 21%

3. Why does the rate of photosynthesis increase in the summer?

  • Longer day hours and hotter weather
  • Shorter day hours and hotter weather
  • Longer day hours and increased rainfall
  • Shorter day hours and decreased rainfall

4. Why do carbon dioxide levels rise at night?

  • Increased burning of fossil fuels
  • Plants don't photosynthesise
  • Plants photosynthesise less
  • Humans breathe more

5. Which one of these processes increases carbon dioxide levels?

  • Volcanic Activity
  • Dissolution in the oceans
  • Photosynthesis
  • Nitrogen Fixation


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