The Earth's atmosphere can be compared to a greenhouse, trapping heat in causing the internal environment to warm up. Surrounding the Earth there is a layer consisting of the greenhouses gases, mainly water vapour, methane and carbon dioxide, which keeps the Earth's temeprature high enough to support life.
The Greenhouse Effect
You need to be able to describe the greenhouse effect. To maximise your marks you need to be able to explain how the greenhouse effect occurs in terms of the interaction of short and long wavelength radiation with the greenhouse gases.
You need to be able to explain how energy from the Sun can enter the Earth's atmosphere but not escape.
Watch the video above and use the six steps to success below to ensure you can answer this fully.