1. Atmosphere and
Heating of the Earth

2. The gases that surround the Earth is called the
atmosphere

3. How much of the Earth’s water is salty?
97%

4. The gases in the primitive atmosphere that were deadly were:
methane
and
ammonia

5. About 4.5 billion years ago trapped gases within the Earth escaped through _____________.
Volcanoes

6. The appearance of what gases allowed cyanobacteria to live and produce oxygen.
Greenhouse
gases

7. The most abundant gas in our atmosphere now is:
Nitrogen

8. The percentage of oxygen in our present atmosphere is:
21%

9. Oxygen became an important part of our atmosphere after the emergence of:
green plants

10. A meteorologist is a person who studies:
weather

11. List the layers of the atmosphere from highest to lowest.
Thermosphere
Mesosphere
Stratosphere
Troposphere

12. The layer of the atmosphere that you live in is the:
troposphere

13. Auroras are caused by chemically charged particles in this layer.
Ionosphere

14. Ozone is a form of:
oxygen

15. Oxygen is a waste product given off by plants.
True or False
Oxygen is a waste product given off by plants.
True

16. As you walk up a mountain, the air gets:
lighter
and
colder

17. Water boils on the Celsius scale at:
100°

18. Water freezes on the Celsius scale at:0°

19. The sphere that contains rock and land is the lithosphere.
True or False
The sphere that contains rock and land is the lithosphere.
True

20. The direct transfer of heat from one substance to another is called:
conduction

21. The transfer of heat in gas or liquids is:
convection

22. Weather occurs in this layer of the atmosphere.
troposphere

23. Satellites orbit in the layer.
exosphere

24. This is the coldest layer in the atmosphere.
mesosphere

25. The ozone and jet stream are found in this layer.
stratosphere

26. AM radio waves are bounced back to the Earth.
ionosphere

27. Meteors burn up in this layer.
mesosphere

28. As you go up in the troposphere, the temperature:
decreases

29. As you go up in the stratosphere, the temperature:
increases

30. As you go up in the thermosphere, the temperature:
increases

31. As you go up in the mesosphere, the temperature:
decreases

32. As you go up in the atmosphere, the air pressure:
decreases

33. This gas is needed for growth of muscles, skin, and organs.
nitrogen

34. This gas is taken in during photosynthesis to make oxygen and food.
carbon dioxide

35. This gas makes up 21% of the present atmosphere.
oxygen

36. This gas is needed for all weather on Earth.
water vapor

37. When you dog Fido sits on your lap, his warmth is heating you by:
conduction

38. Water boiling in a pot is heated primarily by:
convection

39. The sun’s rays warm you by:
radiation

40. A cow getting branded by a hot iron:
conduction

41. Your feet get cold when you open the refrigerator.
Convection

42. Warming up your pizza in the microwave.
Radiation

43. Walking barefoot on the hot sand of the beach.
Conduction

44. Energy transferred as electromagnetic waves.
Radiation

45. The burning of fossil fuels
Ozone or Greenhouse Effect
The burning of fossil fuels
Greenhouse
Effect

46. Ozone or Greenhouse Effect
Ice caps will melt
Greenhouse
Effect

47. Increased risk of skin cancer
Ozone or Greenhouse Effect
Increased risk of skin cancer
Ozone

48. Planting a tree affects the
Ozone or Greenhouse Effect
Planting a tree affects the
Greenhouse
Effect

49. Ozone or Greenhouse Effect
Humans releasing CFCs
Ozone

50. Not using Styrofoam with CFCs
Ozone or Greenhouse Effect
Not using Styrofoam with CFCs
Ozone

51. Ozone or Greenhouse Effect
Cataracts
Ozone

52. Ozone or Greenhouse Effect
Keeps the Earth warm
Greenhouse
Effect

53. Ozone or Greenhouse Effect
Cutting down trees
Greenhouse
Effect

54. Blocks the sun’s UV rays
Ozone or Greenhouse Effect
Blocks the sun’s UV rays
Ozone

55. carbon dioxide and water vapor
Ozone or Greenhouse Effect
carbon dioxide and water vapor
Greenhouse
Effect

56. Lines of equal temperature are called:
Isotherms

57. A high temperature means that particles are moving:
very fast