Unit 5 Study Guide

Unit 5 Weather Study Guide

1.  ___ is the horizontal movement of an area of high pressure to an area of lower pressure.

2.  All winds are caused by a difference in ___.

3.  Wind moves from an area of ___ pressure to an area of ___ pressure.

4.  The name of the wind tells you where the wind is ___.

5.  Wind speed is measured with a(n) ___.

6.  Freezing point of water. In degrees Celsius and Fahrenheit.

7.  Boiling point of water.  In degrees Celsius and Fahrenheit.

8.  The movement of water between the atmosphere and Earth's surface is called the ___.

9.  ___ is the porcess by which water molecules in liquid water escape into the air as water vapor.

10.  ___ is a measure of the amount of water vapor in the air.

11.  Relative humidity can be measured with a ___.

12.  ___ of all kinds form when water vapor in the air condenses and becomes liquid water or ice crystals.

13.  The process by which molecules of water vapor in the air become liquid water is called ___.

14.  The temperature at which condensations begins is called the ___ point.

15.  Warm air holds ___ moisure than cold air. 

16.  Meteorologists classify clouds into three main types:___________.

17.  Clouds that look like fluffy, rounded piles of cotton are called ___ clouds.

18.  Clouds that form in flat layers are called ___ clouds.

19.  Wispy, feathery clouds are called ___ clouds.

20.  Clouds that form at or near the ground are called ___.

21.  Clouds that produce thunderstorms are ___ clouds.

22.  Clouds that are made of ice crystals are ___ clouds.

23.  Clouds that bring steady rain are ___ clouds.

24.  ___ is any form of water that falls from clouds and reaches Earth.

25.  Common types of precipitation include:____.

26.  ___ is drops of water that are at least 0.5 millimeters in diameter.

27.  Raindrops that freeze into solid particles of ice as they fall are called ___.

28.  Raindrops that freeze when they touch a cold surface are called ___.

29.  ___ is round pellets of ice larger than 5 mm in diamter.

30.  ___ is a form of precipitation made of ice crystals. 

31.  Meteorologists measure rainfall with a ___.

32.  Long periods of unusually low precipitation is called a ___.

33.  The area where the air masses meet and do not mix becomes a ___.

34.  Name the four types of weather fronts.

35.  ___ is the force that air exerts on all objects.

36.  Air pressure is measured with a ___.

37.  ___ air pressure ususally indicates a storm is approaching.

38.  ___ air pressure usually indicates clear, fair, weather.

39.  ___ air rises and ___ air sinks.

40.  Know the four fronts, the weather during and after the front, and the front's symbol.

41.  A ___ is a violent disturbance in the atmosphere.

42.  ___ are heavy rainstorms accompanied by thunder and lightening.

43.  Thunderstorms form within large ___ clouds.

44.  A ___ is a rapidly whirling, funnel-shaped cloud that reaches down from a storm cloud to touch Earth's surface.

45.  A ___ is a tropical storm that has winds of 119 km per hour or higher.

46.  A ___ begins over warm water as low-pressure area, or tropical disturbance.

47.  Storms in the US come from the ___ and travel to the ___.

48.  ___ are scientists who study the causes of weather and try to predict it.

49.  Weather ___ carry instruments high into the troposphere and stratosphere.  The intruments measure ___, ___, and ___.

50.  Weather ___ take pictures of the Earth's surface, clouds, and storms.  They are located in the ___.

51.  ___ are lines joining places on the map that have the same air pressure.

52.  ___ are lines joining places that have the same temperature.

54.  Identify a picture of an anemometer and barometer.

55.  Cumulonimbus clouds are associated with ___ fronts.