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REVIEW : UNIT3

Figure 4

1. Refer to the 11lustration above and use the following terms to fill in the blanks below.

Some of the terms may be used more than once.
cold rise south descend hot

air north pole(s) equator

a. The line identified by letter a is the _________________________________ .
b. The sun causes the air at the ________________(letter a) to become _____________ .

c. The hot _________________expands (becomes less dense) and _________________ .

d. The arrow at letter b indicates that the ___________________________ air is rising.
e. The arrows at letter c indicate that the hot ________________________ aloft travels

_____________ward and ___________________toward the _____________________ .

f. As the hot air aloft travels to the ________________ ________________(letter d) and

the ______________ _______________ (letter e), it cools.