C9- Global warming + climate change

• What are global warming and climate change?

  They are environmental phenomena affecting Earth.
• What is the role of the atmosphere?

  It acts as an insulating blanket for Earth.
• How does the atmosphere keep Earth warm?

  By trapping the sun's heat energy.
• What happens to the sun's heat energy when it reaches Earth?

  It is absorbed, re-emitted, or reflected.
• What type of radiation does the sun emit?

  Short wavelength radiation.
• What happens to energy after it is absorbed by the Earth's surface?

  It is re-emitted as longer wavelength radiation.
• What is the greenhouse effect?

  Warming caused by greenhouse gases trapping heat.
• What gases are considered greenhouse gases?

  Carbon dioxide, methane, and water vapor.
• Why is the greenhouse effect getting stronger?

  Due to increased concentrations of greenhouse gases.
• What are the two main reasons for rising carbon dioxide levels?

  Burning fossil fuels and deforestation.
• How does deforestation affect carbon dioxide levels?

  It reduces photosynthesis, increasing CO2 levels.
• What are the two main reasons for increasing methane levels?

  Farm animals and waste decomposition.
• How do farm animals contribute to methane emissions?

  They produce methane during digestion.
• Why is it hard to predict the consequences of global warming?

  There are many variables to consider.
• What does climate change refer to?

  Effects of global warming on climate.
• What does climate describe?

  Long-term weather patterns across the planet.
• What are some consequences of global warming?

  Increased frequency and severity of weather events.
• What causes sea level rise due to global warming?

  Melting ice and thermal expansion of water.
• How does warming water contribute to sea level rise?

  It expands, increasing water volume.
• What impact does climate change have on biodiversity?

  It may lead to a dramatic fall in biodiversity.
• Why might some species not survive climate change?

  They can't adapt or migrate fast enough.
• What are the main impacts of global warming on the planet?

  • Increased frequency of extreme weather events
  • Sea level rise due to melting ice and thermal expansion
  • Changes in biodiversity and species survival
• What processes contribute to the greenhouse effect?

  1. Absorption of short wavelength radiation by Earth
  2. Re-emission as longer wavelength radiation
  3. Interaction with greenhouse gases in the atmosphere