Global Warming

Specification Point 8.26:
  • Describe:
    a) the potential effects on the climate of increased levels of carbon dioxide and methane generated by human activity, including burning fossil fuels and livestock farming
    b) that these effects may be mitigated: consider scale, risk and environmental implications

Human Activity & Climate Change

  • Increasing human population and industrial activities are increasing the amount of Greenhouse gases in the atmosphere.
  • We have seen how the levels of CO2 are being affected.
  • Methane is another Greenhouse gas that is on the rise.
  • Methane is produced in the digestive processes of animals, by the decomposition of vegetation, and by bacterial action in swamps.
  • Increasing global demand for food means that farming and agricultural industries are increasing, hence the amount of methane being produced is also increasing.
  • Scientists agree that Greenhouse gases are causing the average temperature of the Earth to increase by the Greenhouse effect, which is causing global warming.
  • Climate change is when there is a shift in worldwide weather patterns and conditions.
  • Global warming is a kind of climate change since the average temperature across the globe is higher.
  • Effects of global warming include difficulties in obtaining fresh drinking water, melting of the polar ice caps, flooding and flash fires, and the destruction of ecosystems.

Dealing with Climate Change

  • The production of greenhouse gases needs to be reduced drastically to avoid or at least slow climate change.
  • CO2 emissions can be reduced by using renewable energy supplies such as solar or wind energy instead of burning fossil fuels.
  • Awareness and being conscientious about reducing energy usage and our carbon footprint is another way to reduce emissions.
  • Global governments and economies in developed nations are slowly switching to greener and sustainable sources of energy and often offer financial incentives to companies in an effort to convince them to “go green”.
  • Other ways of mitigating the effects of climate change include:
    • Constructing flood defence systems in areas of low lying land.
    • Developing new farming methods to include switching to crops that are better adapted to the new climate.
    • Building more effective irrigation systems to ensure crops can get water during times of drought.

Edexcel GCSE Chemistry Notes

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Morgan Curtin Chemistry

Author: Morgan

Morgan’s passion for the Periodic Table begun on his 10th birthday when he received his first Chemistry set. After studying the subject at university he went on to become a fully fledged Chemistry teacher, and now works in an international school in Madrid! In his spare time he helps create our fantastic resources to help you ace your exams.