Secondary kids

The earth's

has always changed but over hundreds of years. Global warming is speeding up temperature change and just a few degrees will mean changes for the world's ecosystems.

change is a change in the average pattern of weather over a long period of time. To understand change, first you must understand the difference between weather and .

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Greenhouse Gases

The

is a natural property of our atmosphere that allows it to retain heat. 

Global warming occurs when changes to the atmosphere allows additional heat to be trapped.

There are a number of different greenhouse gases responsible for the

.

 

Gases in the atmosphere that trap the sun's energy:

  • Carbon dioxide (CO2)
  • Methane (CH4)
  • Nitrous oxide (N2O)
  • Hydrofluorocarbons (HFCs)

 

causes of climate change