Wind in the Atmosphere
Unit 8 Lesson 1
Complete each box.
What causes Wind?
1. The uneven heating of Earth’s surface by the ________ causes temperature
differences in the air.
Low Pressure is found:
2. Warm air ________, creating areas of ________ pressure.
Cool air _______, creating areas of ____________ pressure.
3. Air moves from areas of higher pressure toward areas of ___________
High Pressure is found at
 In the diagram below, label the air masses and types of pressure
Air sinks
Air Rises
8. How does the sun contribute to
global wind patterns?
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 __________________
______________________________ 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
____________ 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
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 _________________

8-1 Wind SN Notes - cms15-16