2. GLOBAL WARMING LESSON QUIZ

3. Instruction Read a question and click on the answer you think it is best.

4. 1. What is global warming? A. The gradual rise of the earth’s temperature. C. The period after last Ice Age. B. The heat we experience during summer. D. The warming we experience during the day due to the sun’s heat.

5. NEXT QUESTION

6. BACK

7. 2. How can the greenhouse effect be beneficial? A. It will cause Antarctica to be warm and comfortable. C. If the atmosphere didn’t trap some of the sun’s heat, we’d freeze. B. It will end dangerous winter storms. D. It will prevent future ice ages.

8. NEXT QUESTION

9. BACK

10. 3. Why wasn’t global warming a problem 1,000 years ago? A. The earth’s climate was far too cold back then. C. People wore less clothing back then. B. Humans didn’t burn a lot of carbon-based fuels back then. D. All humans back then lived in warm climates.

11. NEXT QUESTION

12. BACK

13. 4. If the earth is like a greenhouse, the carbon gases in the atmosphere are like: A. The plants C. The ground B. The sun D. The glass.

14. NEXT QUESTION

15. BACK

16. 5. Which of these is an opinion about global warming? A. It is the most serious danger that humans face today. C. Burning fossil fuels has contributed to global warming. B. Many people believe it may cause species to go extinct. D. Earth’s temperature has risen about one degree Fahrenheit over the past century.

17. NEXT QUESTION

18. BACK

19. 6. What can you conclude from the fact that global warming can kill coral reefs? A. Certain organisms cannot survive if their environments change. C. Coral reefs can only survive in very cold water. B. Global warming will eventually kill all organisms on Earth. D. Only marine species are affected by global warming.

20. NEXT QUESTION

21. BACK

22. 7. If the polar ice caps melt, which area would face the biggest immediate danger? A. B. C. D.

23. NEXT QUESTION

24. BACK

25. 8. How can cycling to school instead of driving help reduce global warming? A. It gives you extra time to think about global warming. C. Cycling allows you to get more sunshine and oxygen. B. Cars emit greenhouse gases; bicycles don’t. D. Exercise prevents your body from emitting harmful carbon dioxide.

26. NEXT QUESTION

27. BACK

28. 9. What can you infer from the fact that reducing electricity use can help reduce global warming? A. That electric appliances emit greenhouse gases. C. That electrical appliances suck oxygen out of the atmosphere. B. That greenhouse gases are a form of electrical energy. D. That electricity is often generated by burning carbon-based fuels.

29. NEXT QUESTION

30. BACK

31. 10. How can planting trees help counteract global warming? A. Trees soak up carbon dioxide and emit oxygen. C. Trees provide shade that can help people and animals cool off. B. Trees emit carbon dioxide and soak up oxygen. D. Trees provide habitats for animals that have been made homeless by global warming.

32. THE END

33. BACK

34. THANK YOU FOR YOUR TIME