Greenhouse gases & climate change

Cards (4)

  • 4 human activities that have affected the amount of greenhouse gases in the atmosphere
    Deforestation
    Burning fossil fuels
    Farming of animals
    Waste in landfill sites being broken down
  • Greenhouse effect
    Process by which heat energy is trapped within our atmosphere by greenhouse gas molecules
  • How does the greenhouse effect work
    Solar radiation from the sun passes through the atmosphere and hits the earth
    The earth absorbs this energy and reemits it as a longer wavelength radiation towards space
    Some of the longer wavelength energy makes it all the way to space but much is absorbed by small molecules called greenhouse gases
    These molecules then reemit energy and the whole process of absorption and emission can happen over and over again
    This trapped energy keeps the atmosphere warmer and more stable than it would otherwise be
  • What are some consequences of climate change
    Melting ice caps
    Rising sea levels
    Reduced biodiversity