Question

1. The 1000-500mb thickness at location A is 540 dam, while the thickness at location B is 552 dam, while the thickness at location C is 534 dam, which location has the greatest average temperature in the layer between 1000 and 500 mb?

a. A b. B c. C

2. Winds tend to change greatest with height over locations where the thickness:

a. Changes quickly over a relatively short distance. b. Changes slowly over a very long distance. c. Remains nearly uniform with distance.

3. When examining an upper-level map, the polar jet tends to be outlined by the:

a. Temperature (or thickness) pattern b. Humidity (or moisture) pattern c. Surface pressure pattern

4. Winds within the base of a trough tend to be:

a. Sub-geostrophic b. Super-geostrophic c. Geostrophic

5. Which force is significant only near the surface and disrupts geostrophic balance causing the wind to blow across the isobars towards lower pressure?

a. Pressure gradient b. Centrifugal c. Coriolis d. Friction (Drag)

6. Calculate the 1000-500 mb thickness if the height of the 1000mb surface is 185m and the height of the 500 mb surface is 5525m.

a. 500 mb b. 534 dam c. 5710 m d. 571 dam

Answer 1

1. B) because the more the thickness, the greater the layer average temperature between 500 and 1000 mb.

2. A) This is so because here the temperature changes rapidly over short distances.

3. A) Polar maps outline temperature pattern.

4. A) Winds within the base of a trough tend to be sub-geostrophic.

5. D) Drag force causes such phenomena which is more observed on the surface.

6. B) Height at 1000 mb is 185 m and height at 500 mb is 5525 m. So thickness 5525-185=5340m=534dam (1 dam=10 m)

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