1. Quiz 8
The undulating waves in the upper level air flow that circle the earth are called __ waves.
2. The northernmost jet stream in North America is called the __ __ jet stream.
3. The southernmost jet stream in North America is called the __ jet stream.
4. The jet stream in #3 above is located:
a. poleward end of Hadley cell, below tropopause
b. Above polar front
c. in the trade winds
d. at the top of the stratosphere

2. 5. Which has high density: A. dry air mass B. wet air mass 6
5. Which has high density: A. dry air mass B. wet air mass 6. The type of front that separates two air masses that are unlike in moisture only (same temperature) is a : A. warm front B. stationary front C. dry line

3. 7. Label the air masses, using the two-letter system. 1. 2. 3. 4 8 6 75

4. 9. Draw the weather map symbol for the following fronts: a
9. Draw the weather map symbol for the following fronts: a. warm front b. cold front c. stationary front d. occluded front e. dryline