Download Weather Test Study Guide

Name: _________________________________________ Date: _______________ Page: _______________
Weather Test Study Guide
I.
Water Cycle
Using the diagram to the right, label the parts of the water cycle.
1.
2.
3.
4.
5.
6.
II.
Sun: energy
Condensation
Evaporation
Precipitation
Collection
Run-off
Precipitation
6
7. Precipitation forms when water droplets in the clouds become too heavy to stay
afloat and fall to the ground.
8. This type of precipitation begins frozen and then melts before hitting Earth’s surface
rain
9. This type of precipitation begins frozen, melts into rain as it falls and freezes when it hits
something on the ground that colder. Freezing rain
10. This type of precipitation begins frozen, lands frozen, and lands as a crystal. snow
11. This type of precipitation begins frozen, partially melts, then refreezes into ice pellets
before landing. sleet
12. This type of precipitation is formed by ice being tossed around in the clouds with winds
and causing it to grow in size. The ice pellets finally get too large to stay afloat and fall
in frozen form. hail
III.
Humidity
13. What is humidity? Amount of water vapor in the air
14. The warmer the air is, the _more water vapor it can hold.
15. A sling psychrometer is used to measure relative humidity.
16. Using your relative humidity chart in your ILL, calculate the relative humidity of a dry
bulb temperature of 18 degrees C with a wet bulb temperature of 15 degrees C.
73%
IV.
Air Masses and Fronts
17. Warm air is less dense than colder air and rises in the atmosphere. Rising moist air
causes areas of low pressure, creates clouds, and is associated with rainy weather.
Name: _________________________________________ Date: _______________ Page: _______________
18. Cool air is more dense than warmer air
and sinks in the atmosphere. Sinking dry air
causes areas of high pressure, evaporates
clouds, and is associated with fair/sunny
weather.
19. Match the following fronts with their
descriptions:
___B__ A warm air mass overtakes a cooler air mass leading
to a long period of rain
__D___ A warm air mass is trapped between two colder air masses
__A___ A cold air mass overtakes a warmer air mass leading to
stormy weather
__C___ A warm air mass and a cold air mass meet but neither move
leading to several days of consistent weather
V.
a. cold
b. warm
c. stationary
d. occluded
Winds
20. Winds are caused by air molecules that move from an area of high pressure toward
an area of low pressure.
21. The Coriolis Effect describes how winds curve toward the equator.
22. Explain a sea breeze: breeze created by winds coming off ocean to warm land
23. Explain a land breeze: breeze created by winds coming off land towards warm ocean
VI.
Clouds
24. What part of the water cycle is where clouds are created? condensation
25. What type of wispy cloud usually indicates that the weather will change within 24
hours?cirrus
26. What type of cloud is associated with thunderstorms? cumulonimbus
VII.
Severe Weather
27. Where do hurricanes form? Hurricanes form over warm ocean water
28. What are two dangers from hurricanes? High winds, heavy rains, storm surge
(flooding)
29. Thunderstorms are caused by quickly rising warm, moist air.
30. What are two things produced by a bolt of lightning? Heat, light, thunder
Name: _________________________________________ Date: _______________ Page: _______________
VIII.
Weather Tools
31. Match the tool to its definition.
___I__ radar
a. measures air pressure
___E__ weather balloon
b. takes measurements in a single location on
land (temperature, wind speed, etc.)
__B___ ground station
c. sends information to Earth from orbit
__C___ satellite
d. measures wind speed
__H___ weather planes & ships
e. takes measurements over a large area and
from different altitudes
__D___ anemometer
f. measures relative humidity
__F___ psychrometer
g. measures temperature
__A___ barometer
h. takes measurements along a path; can be
used to gather information from storms
___G__ thermometer
i. one type is Doppler; detects air motion and
precipitation