1. weather

2. The state of the atmosphere: considering wind, temperature, cloudiness, moisture, pressure, and other factors.

3. forecast

4. A prediction of what the future weather will be like.

5. atmosphere

6. The layer of air that surrounds the earth.

7. temperature

8. A measurement of the amount of heat something contains.

9. weather pattern

10. When the weather repeats itself several days in a row.

11. climate

12. The average weather over a long period of time.

13. almanac

14. A book that contains weather data and forecasts.

15. water cycle

16. The journey water takes as it circulates from the land to the sky and back again.

17. water vapor

18. Water in its gaseous state- instead of liquid or solid. It is totally invisible.

19. condensation

20. When a gas becomes a liquid.

21. evaporation

22. When a liquid becomes a gas.

23. precipitation

24. Any liquid or solid form of water that falls from the atmosphere. For example: rain, snow, hail, or sleet.

25. stratus

26. Flat, featureless clouds low in the atmosphere that cover the sky like a blanket. They indicate rain.

27. cirrus

28. High level clouds made mostly of ice crystals. They indicate fair weather.

29. cumulonimbus

30. Clouds that bring summer storms, usually with thunder, lighting, and strong winds.

31. cumulus

32. Mid-level, puffy clouds. They indicate fair weather.

33. fog

34. Clouds that form at ground level.

35. wind isobars

36. Air flowing from high pressure to low pressure.

37. beaufort scale

38. A scale that relates the wind speed to its effects, classified from force 0 to force 12.

39. prevailing winds

40. The speed and direction of wind over a particular point on the earth's surface.

41. Westerlies

42. The global winds that carry weather over the United States, traveling from West to East.

43. Easterlies

44. Global winds at the poles of the earth. These global winds sometimes affect our weather during the winter months.

45. air mass

46. A massive bubble of air that has the same temperature and pressure throughout.

47. air pressure

48. The force of air pushing down on Earth.

49. barometer

50. A device used to measure air pressure.

51. aneroid barometer

52. A barometer that uses liquid.

53. isobar

54. A line drawn on a weather map that connects locations with the same air pressure.

55. front

56. Where air masses meet, but do not mix and rain or storms occur.

57. cold front

58. The leading edge of a moving mass of cold air, brings thunderstorms, and leaves behind cooler air.

59. warm front

60. The leading edge of a moving mass of warm air, brings rain showers, leaves behind warmer air.

61. occluded front

62. Where a cold front catches up to and overtakes a warm front.

63. stationary front

64. When a cold and a warm air mass meet, but neither moves.

65. tornado

66. A narrow, violent funnel cloud that may form during a thunderstorm with winds greater than 65 kph.

67. hurricane

68. A large rotating windstorm with a calm central eye and winds greater than 75 mph.

69. meteorologist isobars

70. A person who studies the weather.

71. meteorology

72. The study of the earth’s atmosphere and what happens in it.

73. station model

74. A weather symbol that represents the state of the weather at a particular place.

75. rain gauge

76. A device used to measure the amount of precipitation in a given area.