Tuesday 19 March 2013

References

Microsoft Encarta 2009
http://en.wikipedia.org/wiki/Climate_change
http://en.wikipedia.org/wiki/Global_warming
http://www.youtube.com/watch?feature=player_embedded&v=knO_2ECN3Bc

Assignment


Assignment


1.    Give at least five (5) signs of global warming/climate change.
2.    Explain why they are brought about by global warming/climate change.
3.    Explain how countries can help to stop global warming/climate change.
4.    As an individual, how can you contribute in controlling global warming/ climate change?

Evaluation


Solve the crossword puzzle



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ACROSS                                                             DOWN

4.   It maintains the temperature                      1. When water is too warm, corals
      needed to support life.                                will expel the algae living in their
5. Often used to signify an uncontrolled              tissues causing the coral to turn
intense fire that breaks out in the wooded           completely white.
areas due to many factors ranging from            2. It refers to the phenomenon
natural to man-made causes                             where the lower atmosphere
9. The primary greenhouse gas                          worldwide becomes warmer.
emitted through human activities.                    3. the removal of a forest or stand
                                                                        of trees where the land is
                                                                        thereafter converted to a non-forest use.   
                                                                    6. Sea levels around the world are rising.
                                                                    7. The measure of the average
                                                                         kinetic energy of the molecules of
                                                                         an object, indicated by the rise
                                                                         and fall of the column of mercury
                                                                         in a thermometer.