climate change P1

Cards (31)

  • What is the distinction between global warming and climate change, according to the text?
    Climate change is a long-term change, global warming is a sharp rise
  • How far back does the Quaternary period span?
    About 2.6 million years ago to now
  • What was Earth like before the Quaternary period's glacial period?
    Much warmer and more stable
  • How long did the cold glacial period last?
    100,000 years
  • What are the key sources of evidence for understanding past climate change?
    • Ice and sediment cores
    • Tree rings
    • Pollen analysis
    • Temperature records
  • How are ice cores formed in ice sheets?
    One layer of ice is formed every year
  • What information can scientists gather from analyzing gases trapped in ice core layers?
    The temperature of each year
  • What information can scientists infer from the thickness of tree rings?
    What the past climate was like
  • For how long are tree rings a reliable source of evidence?
    One hundred thousand years
  • How does pollen analysis help in understanding past climates?
    By identifying and dating preserved pollen
  • Since when have global temperatures been measured accurately?
    Since the 1850s
  • How do scientists use preserved pollen to infer past climates?
    Compare the climate to similar plants today
  • How can historical records extend the record of climate change?
    Through harvest states or newspaper weather reports
  • What are the natural causes of climate change?
    • Orbital change
    • Volcanic activity
    • Solar output
  • How does orbital change affect Earth's temperature?
    It affects solar radiation the earth receives
  • How do volcanic eruptions lead to cooling of the Earth's surface?
    Particles reflect the sun's rays to space
  • How long is the solar cycle described in the text?
    About 11 years
  • What are the main human causes of climate change mentioned in the text?
    • Burning fossil fuels
    • Farming livestock
    • Deforestation
    • Cement production
  • How does burning fossil fuels contribute to climate change?
    It releases carbon dioxide
  • What gas is produced by farming livestock that contributes to global warming?
    Methane
  • How does deforestation contribute to climate change?
    Plants stop taking in carbon dioxide
  • How does cement production contribute to climate change?
    Limestone releases carbon dioxide
  • What are the two main strategies for managing climate change?
    • Mitigation
    • Adaptation
  • What does mitigation include?
    Carbon capture or planting trees
  • What does adaptation include?
    Changing agricultural systems or managing water supplies
  • What could farmers use to sustain optimum conditions with new rainfall patterns?
    Biotechnology
  • What should be recycled in dry areas to manage water shortages?
    Rain water and waste water
  • How do the Earth's tilt and orbital shape influence solar radiation reception?
    Affecting the amount received
  • What agricultural practice involving water contributes to global warming?
    Rice paddies
  • What is the main purpose of carbon capture technology?
    Reduce emissions from power stations
  • What environmental change is predicted to occur in dry areas?
    They are predicted to get drier