10. $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500

11. An air mass that forms over an ocean is called ?

12. A maritime air mass

13. What are lines joining places that have the same temperature?

14. isotherms

15. Cool, clear weather usually follows a _________ front.

16. Cold Front

17. ________________is a sudden spark or electrical discharge, as electrical charges that jump between parts of a cloud or between a cloud and the ground.

18. Lightning

19. On a weather map,________________ join places on the map with the same air pressure.

20. isobars

21. If you observe air pressure decreasing, what kind of weather do you think is coming?

22. Clouds and precipitation

23. A thermometer measures

24. Air Temperature

25. In Fahrenheit the freezing point of water is….

26. 32 degrees Fahrenheit

27. In Celsius the boiling point of water is …

28. 100 degrees Celsius

29. How are air masses classified?

30. By Temperature and Humidity

31. A rapidly moving cold air mass meets a slowly moving warm air mass and forms a front. What will most likely occur at this front?

32. Cold air will slide under the warm air. Warm air will rise and cool and clouds will form.

33. What is the main way the troposphere is heated?

34. Convection Currents

35. What are the three major global wind belts?

36. Trade Winds, Polar Easterlies and the Prevailing Westerlies

37. The two areas of calm are

38. The Doldrums and the Horse Latitudes

39. The instrument used to measure wind speed is called a

40. Anemometer

41. A scientist who studies the causes of weather and tries to predict weather is called a ______?

42. Meteorologist

43. Bands of high speed winds above the Earth’s surface are called__________?

44. Jet Streams

45. The increased cooling that a wind can cause is called

46. The Wind Chill Factor

47. What is the natural process where gases hold heat in the air called?

48. The Greenhouse Effect

49. What is an air mass?

50. A large body of air that has similar temperature, humidity and air pressure throughout.

51. Name 4 types of fronts?

52. A. Warm B. Cold C. Stationary D. Occluded

53. How are air masses moved in the US?

54. A. Jet Streams B. Prevailing Westerlies

55. A polar air mass has _____________pressure?

56. High

57. The boiling point of water in Fahrenheit is …

58. 212 degrees fahrenheit

59. A cold air mass and a warm air mass meet and remain stalled over an area is a ____________________front.

60. Stationary Front

61. What causes winds?

62. Differences in air temperature and pressure caused by the uneven heating of the Earth’s surface

63. When a warm air mass slides over a cold air mass a _________front is formed.

64. Warm Front

65. When a warm air mass is caught between two cooler air masses a(n) _________ front is formed.

66. Occluded Front

67. Winds that are found between 0 and 30 degrees latitude are called

68. Trade Winds

69. I am a front that brings light rain for several days. ____________

70. Warm or Stationary

71. Winds that are found between 30 and 60 degrees latitude are called

72. The Prevailing Westerlies

73. I am a front that brings severe weather. (Heavy downpours, gusty winds and cooler temperatures)

74. Cold Front or Occluded Front

75. Name this front?

81. Lower pressure usually means clouds, rain, or snow.

82. Higher pressure usually means nice, clear weather.