Wind in the Atmosphere
Unit 8 Lesson 1
Complete each box.
What causes Wind?
_____________
cells
1. The uneven heating of Earth’s surface by the ________ causes temperature
differences in the air.
Low Pressure is found:
1.
2. Warm air ________, creating areas of ________ pressure.
Cool air _______, creating areas of ____________ pressure.
2.
3. Air moves from areas of higher pressure toward areas of ___________
pressure.
High Pressure is found at
 In the diagram below, label the air masses and types of pressure
Cool
Warm
_________
________
Air sinks
Air Rises
_______
Pressure
8. How does the sun contribute to
global wind patterns?
_______
Pressure
9. Earth rotates, causing winds to be _____________________, or curved.
10. The apparent curving of the path of a moving object from an otherwise
straight path due to Earth’s rotation is called the __________________
effect.
______________________________ Process
4. Wind is the movement of air caused by differences in __________ pressure.
5. Cold air at the _____________ creates areas of high pressure there.
Warm air at the __________________ creates an area of lower pressure.
11. Points on Earth closer to the _______________ must travel faster than
points close to the poles to make one complete rotation each day.
6. Globally, air moves in circular patterns called ______________ cells.
12. In the Northern Hemisphere, air moving to the north curves to the
7. Convection cells occur at about every 30o of latitude, producing
_______________________ belts
___________, and air moving to the south curves to the west.
What are examples of global winds?
13. ___________________ winds are wind systems that occur at or near
Earth’s surface.
The _________ _______________- blow between poles & 60o latitudes
& curve west
The _________________ - between 30o
& 60o & curve east
____________ winds- Between 30o & 0o
What are examples of local winds?
Label High and Low Pressure on each picture
20. _______________ winds are the movement of air over short distances.
They can blow from any direction.
21. A ____________ breeze forms
during the day, as cooler air
over the ocean flows toward the
land.
____________ winds- Curve to the west
The _________________ - blow from
west & curve east
22. A ____________ breeze
forms at night, as cooler air from
the land blows toward the water.
The _________ _______________- blow from east & curve west
14. The trade winds of both hemispheres meet in a calm area around the
equator called the ______________. Very little wind blows in the doldrums.
15. The _____________ latitudes are calm areas at about 30° latitude in both
hemispheres. Air stops moving and sinks in the horse latitudes.
16. Winds are named for the direction they flow _________________
17. _____________ streams are narrow belts of high-speed winds that blow
from west to east, between 7 km and 16 km above Earth’s surface.
23. During the day, the sun warms the air on
mountain slopes faster than it warms the
air in a valley. This results in areas of
_________ pressure near the mountain
tops.
24. The pressure difference causes a
_________________ breeze, which flows
from the valley up the slopes of mountains during the day.
18. Jet streams follow boundaries between________
& cold air and can shift north & _____________.
19. The two main jet streams are
the ________________________ jet stream and
the _______________ jet stream.
25. At night, as air along the mountain
slopes cools, it flows down into the
valley, creating a _________________
breeze.