Basic 5 & 6 Basic Science

Basic Science

The Meaning and Causes of Global Warming.

Global warming refers to the long term rise in the average temperature of the earth’s climate. It is an aspect of climate change shown by temperature measurements. Global warming started since the pre industrial times and it still continues until our time. The major cause of global warming is due to human activities, such as emission of green house gases such as carbon dioxide, methane and nitrous oxide. Pollutants from industries keep on depleting the ozone layer thereby exposing the earth to ultra Violet rays of the sun. Other human activities resulting in global warming include burning of fossil fuels, deforestation, farming etc.

1.  A long term constant rise in temperature is called ___

2.  Global warming is chiefly caused by ______ activities

3.  Pollution from ____  is a major cause of global warming

4.  Carbon dioxide is released to the atmosphere by ____

5.  Depletion of the ozone layer is caused by ____

6.  The indiscriminate cutting down of trees from the forest is called____