GCSE: Greenhouse effect and global warming

There is the greenhouse effect, and then there is global warming (enhanced greenhouse effect). The greenhouse effect is caused by certain gases (and clouds) absorbing and re-emitting the infrared radiating from Earth’s surface. It currently keeps our planet 20°C to 30°C warmer than it would be otherwise. Global warming is the rise in temperatures caused by an increase in the levels of greenhouse gases due to human activity.
Main greenhouse gases: carbon dioxide, methane, nitrous oxide. The higher their amount in the atmosphere, the higher the temperature. Why?

Watch this video!

Learn the following annotated diagram!

The greenhouse effect

A series of short videos on the impacts of global warming: 1-6 degrees could change the world

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