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Climate Change

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    Climate Change
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  • Name the process that maintains earth at a stable & warm temperature
    The Greenhouse Effect
  •  15
  • Name 2 consequences of climate change (apart from rising temperatures)
    Either: Rainfalls, Tropical storms & Hurricanes, Rising sea levels, Melting glaciers, or Warmer oceans
  •  15
  • On which continent did scientists conduct an experiment to prove their climate change hypothesis?
    Antarctica
  •  15
  • What did scientists discover after their glacier investigation?
    Periods of higher CO2 concentrations coincide with periods when the Earth was warmer.
  •  20
  • What fossil fuel was mined and burned during the 18th century?
    Coal
  •  20
  • Mention the name of 2 electromagnetic waves the sun emits to earth
    Either: Visible light, ultraviolet light, infrared, radio waves, X-rays, and gamma rays
  •  20
  • What process removes CO2 from the atmosphere? What is the recent problem humans are having with such process?
    Photosynthesis. Deforestation is resulting in the reduction of CO2 removal, which causes a bigger concentration of such.
  •  25
  • How is water vapour removed from the atmosphere (by nature)?
    When it rains or snows
  •  25
  • How did scientists prove their hypothesis regarding climate change?
    They did an expedition to Antarctica. Here, they extracted and analyzed trapped air bubbles from glaciers to observe C02 ratios.
  •  25
  • Name the 2 main GHG.
    CO2 & Water Vapour
  •  20
  • Why did scientists choose glaciers to prove their hypothesis about climate change & the concentration of CO2?
    Ice builds up over thousands of years → ice from deeper down is older than ice near the surface, therefore they could observe CO2 ratios from years ago
  •  25
  • What other factors also affect global temperatures?
    The Milankovitch cycles in the Earth’s orbit and variation in sunspot activity
  •  25
  • What are GHG?
    Gases that have the property of absorbing infrared radiation (net heat energy) emitted from Earth's surface and reradiating it back to Earth's surface
  •  20