Quiz on Global Warming


Climate change is already happening and represents one of the greatest environmental, social and economic threats facing the planet. The Earth´s average surface temperature has risen by 0.76°C since 1850. It is very likely to have been caused by human activities.
Try the quiz below and learn more about climate change. Click away to start an exciting and informative experience!

Question 1

The earth has a radius of some _____ km. Ninety-nine percent of the earth's atmosphere is contained within a layer approximately _____ km thick.