Page 132 - Science Course 1 (Book 2)
P. 132
Mo9-L5a: What are Air Currents? Mo9-L5b: What are the Main Wind Belts on
Earth?
Key Concept Mo9-L5b What are the Main Wind Belts on
What are Air Currents? Earth?
KEY CONCEPTS:
How are air currents on Earth affected by Earth’s 1. What are the main wind belts on Earth?
spin?
Vocabulary A-Z
Let us learn some vocabulary
trade winds
steady winds that f ow from east to west between
30˚N latitude and 30˚S latitude.
polar easterlies
cold winds that blow from the east to the west near
SUMMARY the North Pole and South Pole.
What are Air Currents?
Wind is created by pressure differences
between one location and another.
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