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Weather: lesson 3 “Predicting Weather”
Study Guide for p. 396-402
Key for Level B
A. isobars
E. warm front
B. air mass
F. occluded front
C. Doppler radar
D. cold front
G. convection current
H. front
1. ___G____a circular pattern of rising and sinking air
2. ___B___a large region of the atmosphere in which the air has similar
properties throughout
3. ___H____the boundary between two air masses
4. ___D__ a boundary where cold air moves in under a warm air mass
5. ___C___a special technology used to detect precipitation and tell
wind speed
6. __ E____a boundary where warm air moves in over a cold air mass
7. ___A___lines on a weather map that connect places with equal air
pressure
8. ___F____a front that occurs when cool air catches up with a warm
front and then moves underneath the warm front, creating
a wedge of warm air between two masses of cool air
9. When isobars are spaced closely together, what does this tell about
the winds in that area?
Wind speeds will be high. (It will be windy)
10. When isobars are widely spaced apart, what does that tell about the
winds?
It will not be windy or there will be a gentle breeze.
11. Name the three basic types of fronts.
a. cold front
b. warm front
c. occluded front
12. Draw the symbol used on a weather map to show each of these fronts.
(Label each with their name.)
**(You will not need to know the stationary front on this test.)**
13. What symbol is used on a weather map to show a high pressure system?
H
14. What type of weather would an area of highpressure bring?
Fair weather, clear skies
15. What symbol is used on a weather map to show a low pressure system? L
16. What type of weather would an area of low pressure bring?
Cloudy, chance of precipitation
17. In general, what type of weather do fronts bring? precipitation
18. Name 3 properties of air in an air mass.
a. temperature
b. humidity
c. air pressure
19. What information does Doppler radar provide?
- Detects precipitation and tells wind speed
20. How are satellites used to study and predict weather?
They take pictures of large weather patterns and relay them back to
computers on Earth.
Review concepts:
21. Air always moves from an area of high pressure to an area of
low pressure.
22. Which has higher air pressure? warm air/cool air
23. Which can hold more water vapor? warm air/cool air
24. During evaporation, tiny water particles leave lakes, oceans,
and puddles and enter the atmosphere.
25. The amount of water vapor in the air is humidity.
1. Draw an arrow on the map to show the direction the cold front is moving.
Arrow should point in the same direction as the little blue arrows on the cold front
symbol.
2. What kind of weather would you expect to find along the cold front?
Rainy, with a chance of brief but strong storms
3. Draw a circle around a “high.” (only 1, please) Circle one of the H symbols.
4. What kind of weather would you find in the high pressure system?
Sunny, clear skies
5. Draw a square around a “low.” (only 1, please) Square around one of the L
symbols.
6. What kind of weather would you find in the low pressure system?
Clouds, possible precipitation
7. What is the air pressure in the “low” located in California? (Be sure to include the
unit.)
1009 millibars
8. Draw a triangle on a spot that would be having no wind or just a gentle breeze.
Find a spot where the isobars are spaced widely apart.