GP - Y9(t3)

• perspective: a particular way of looking at or understanding something
• Global warming: increase in the average temperature of the earth's atmosphere due to increase of greenhouse effect
• what is the greenhouse effect


  natural process that warms up the earth's surface temperature
• Solutions to global warming?

  • -stop exploiting fossil fuels = use renewable energy (solar, wind, water)
  • prevent illegal logging and deforestation
  • -conserve energy at home, (turn off unnecessary appliances) (use public transport) (eating more plant-based meals)
  • Reduce, Reuse, Recycle
  • choose eco-friendly products
• process of greenhouse effect: sun energy reach earth's atmosphere

  • -energy is reflected back to space

  • -(human) absorbed(heats/warms up the earth) and re-radiated due to certain gases that traps heat known as greenhouse gases such as methane, carbon dioxide etc
• effects of global warming

  • threats to animal and their habitats
  • extreme weather (droughts, flooding)
  • rising sea level = ice caps melting
• global warming causes (man-made):

  -overpopulation = +CO2 emission, +usage of chemical fertilizers

  -deforestation (tropical forest for wood, farmland)

  -industrial development (fossil fuel burning) = +CO2 emission

  -agriculture = +methane emission

  -use of vehicles (burning gasoline for vehicles) = +CO2 emission
• global warming causes (natural):

  -volcanoes

  -water vapour

  -melting permafrost

  -forest blazes
• example of greenhouse gases

  CO2, methane, chlorofluorocarbons, nitrous oxide)
• climate change: long term change in the average weather patterns