1. Global Warming

2. What is global warming?  An increase in global average temperatures.

3. What causes global warming?  Greenhouse effect. –The gasses in the atmosphere let some energy from the sun through. –The gasses also trap energy warming Earth.  Greenhouse effect. –The gasses in the atmosphere let some energy from the sun through. –The gasses also trap energy warming Earth.

4. What causes global warming?  Greenhouse effect –An increase in greenhouse gasses causes more energy to be trapped. GGreenhouse effect –A–An increase in greenhouse gasses causes more energy to be trapped.

5. Are humans the cause of global warming?  Unknown.  Much debated topic.  Unknown.  Much debated topic.

6. Are humans the cause of global warming?  Yes. –An increases of CO  from cars, factories and burning the rainforests is increasing greenhouse gasses.  Yes. –An increases of CO  from cars, factories and burning the rainforests is increasing greenhouse gasses.

7. Are humans the cause of global warming?  No. –The Earth has heated and cooled several times in its history.  No. –The Earth has heated and cooled several times in its history.

8. What effects will global warming have in Earth’s future?  Melting of icecaps will cause flooding in some areas.  Increase in evaporation will cause drier climates in some areas. MMelting of icecaps will cause flooding in some areas. IIncrease in evaporation will cause drier climates in some areas.