1. 2 pt 3 pt 4 pt 5pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2pt 3 pt 4pt 5 pt 1pt 2pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4pt 5 pt 1pt Water Cycle Oxygen Cycle Carbon Cycle Nitrogen Cycle Human Impact

2. Water changes from a gas to a liquid through_______ a. Condensation b. Evaporation c. Infiltration d. Transpiration

3. Water changes from a gas to a liquid through_______ a. Condensation

4. Water changes from a liquid to a gas through_______ a. Condensation b. Evaporation c. Infiltration d. Transpiration

5. Water changes from a liquid to a gas through_______ b. Evaporation

6. Water goes “into” the ground through________ a. Condensation b. Evaporation c. Infiltration d. Transpiration

7. Water goes “into” the ground through________ c. Infiltration

8. Plants return water to the atmosphere through_____ a. Condensation b. Evaporation c. Infiltration d. Transpiration

9. Plants return water to the atmosphere through_____ d. Transpiration

10. The watery layer of the earth is called the___________ a. Atmosphere b. Lithosphere c. Hydrosphere d. Precipitation

11. The watery layer of the earth is called the___________ c. Hydrosphere

12. The symbol for Carbon is__ a. C b. Car c. Cb

13. The symbol for Carbon is__ a. C

14. Humans and animals breathe out ___________ a. Oxygen b. Carbon c. Carbon dioxide d. Nitrogen

15. Humans and animals breathe out ___________ c. Carbon dioxide

16. A colorless, odorless flammable gas that is the major part of natural gas is a. Carbon dioxide b. Methane c. Nitrogen

17. A colorless, odorless flammable gas that is the major part of natural gas is b. Methane

18. Photosynthesis converts _____ and _____ into carbohydrates. a. Carbon dioxide and water b. Oxygen and water c. Nitrogen and water

19. Photosynthesis converts _____ and _____ into carbohydrates. a. Carbon dioxide and water

20. Photosynthesis occurs in_____ a. Humans b. Animals c. Plants and trees d. Factories

21. Photosynthesis occurs in_____ c. Plants and trees

22. The gaseous envelope surrounding the earth is the_______ a. Biosphere b. Lithosphere c. Atmosphere

23. The gaseous envelope surrounding the earth is the_______ c. Atmosphere

24. The process that breaks apart simple food molecules to release energy is________ a. Photosynthesis b. Combustion c. Respiration

25. The process that breaks apart simple food molecules to release energy is________ c. Respiration

26. Another name for glucose is a. Protein b. Fat c. Solution d. Sugar

27. Another name for glucose is d. Sugar

28. Substances reacting with oxygen to give heat and light is called______ a. Protein b. Combustion c. Respiration d. Sugar

29. Substances reacting with oxygen to give heat and light is called______ b. Combustion

30. The solid part of the earth consisting of the crust and the outer mantle is called the__________ a. Biosphere b. Atmosphere c. Lithosphere d. Sugar

31. The solid part of the earth consisting of the crust and the outer mantle is called the__________ c. Lithosphere

32. The most abundant element in the earth’s atmosphere is_______ a. Oxygen b. Carbon c. Water d. Nitrogen

33. The most abundant element in the earth’s atmosphere is_______ d. Nitrogen

34. What percent of the atmosphere is nitrogen? a. 85% b. 81% c. 78% d. 70%

35. What percent of the atmosphere is nitrogen? c. 78%

36. Gaseous nitrogen must be fixed by ________ before it can be used. a. oxygen b. carbon c. bacteria d. germs

37. Gaseous nitrogen must be fixed by ________ before it can be used. c. bacteria

38. Nitrogen is pass through the_________ a. water b. food chain c. oxygen cycle d. air

39. Nitrogen is pass through the_________ b. food chain

40. When an organism dies, _______ break down the body. a. producers b. users c. decomposers d. air

41. When an organism dies, _______ break down the body. c. decomposers

42. Burning fossil fuels and forests releases various forms of nitrogen contributing to global warming and acid rain. True or False

43. Burning fossil fuels and forests releases various forms of nitrogen contributing to global warming and acid rain. True

44. Fewer plants means less oxygen and more carbon dioxide. This enhances the balance of the natural oxygen cycle. True or False

45. Fewer plants means less oxygen and more carbon dioxide. This disturbs the balance of the natural oxygen cycle. False

46. Every time something burns (combustion), more carbon dioxide is released into the atmosphere. True or False

47. Every time something burns (combustion), more carbon dioxide is released into the atmosphere. True

48. Combustion of fossil fuels adds sulfur and nitrogen to the air. These mix with the water vapor in the atmosphere and make it more acidic. True or False

49. Combustion of fossil fuels adds sulfur and nitrogen to the air. These mix with the water vapor in the atmosphere and make it more acidic. True

50. It is unnecessary to use alternative forms of fuels like wind and solar forms. True or False

51. It is necessary to use alternative forms of fuels like wind and solar forms. False