Air Pressure and Wind Name ____________________Period_____
P. 398-402 and 418-424
1. What is air pressure?
2. What is a barometer?
3. What are the two main reasons air pressure changes?_________________________
____________________________________________________________________
4. Warm air is ____________ than cold air because __________________________
____________________________________________________________
5. Warm air contains more water vapor, and the more water vapor the air contains the more _____________ it
is.
6. What will the weather be like when air pressure is falling? ___________________
7. What will the weather be like when air pressure is rising? ____________________
8. Wind moves from _____ to _____ pressure.
9. A north wind means it is blowing from the north. What does a southwesterly wind mean?
______________________________________________________________
10. When does a sea breeze occur? Time of Day: __________________
Temperature Land warmer/colder: ___________________
Temperature Water warmer/colder: ___________________
Pressure Land high/low: __________________
Pressure Water high/low: __________________
Sketch a sea breeze
11. When does a land breeze occur? ___________________
Time of Day: day / night: ______________
Temperature Land warmer/colder: ___________________
Temperature Water warmer/colder: ___________________
Pressure Land high/low: __________________
Pressure water high/low: __________________
Sketch a land breeze
(The arrows show how air moves during the day. Cool night temperatures affect air pressure. Air moves in the opposite direction at night. Draw arrows on the bottom
diagrams to show how the air moves at night.)
12. What is the coriolis effect?____________________________
13. What does the Coriolis Effect do to a wind in the Northern Hemisphere?
GLOBAL WINDS
Name __________________ Period____________
DIRECTIONS: 1) Label the names of the global winds on the map below. 2) Finish drawing the direction of
winds that are missing on the map. 3) Provide three facts about each of the wind patterns below.
POLAREASTERLIES: ______________________________________________________________________
______________________________________________________________________
WESTERLIES: ________________________________________________________________________
________________________________________________________________________
TRADEWINDS: ________________________________________________________________________
________________________________________________________________________
DOLDRUMS: _____________________________________________________________________________
________________________________________________________________________
Answer the following questions.
1. What causes the wind patterns to turn to the right in the northern hemisphere and to the left in the southern
hemisphere? _______________________________________________________________________________
2. In which direction do the polar easterlies move? _____________________
3. What winds did sailors rely on to move their cargos from Europe to the West Indies and South America?
__________________
4. Which winds play an important part in the weather here in the U.S.? ________________________________
5. Name the winds near the equator with little or no wind? _______________