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.