1. A typical 500 mb height is about:
A. 500 m
B. 5,000 m
C. 10,000 ft
D. 5,000 ft

2. Heights are proportional to:
A. Wind speed
B. Temperature
C. Relative humidity
D. Vorticity

3. Pressure decreases faster with altitude in:
A. Colder air
B. Drier air
C. Warmer air
D. Polluted air

4. Zig-zags and dotted lines on a map represent:
A. Ridges and troughs, respectively
B. Troughs and ridges, respectively
C. Warm and cold fronts, respectively
D. Nothing, they are stray marks on the map

5. Higher 500 mb heights indicate:
A. Colder air
B. Moister air
C. Warmer air
D. Denser air