Chapter_10_Global_Circulations

Question 1

What drives global atmospheric circulation?

Answer 1

Unequal heating between equatorial and polar regions.

Question 2

Name the three circulation cells in each hemisphere.

Answer 2

Hadley cell (0°-30°), Ferrel cell (30°-60°), Polar cell (60°-90°).

Question 3

What are trade winds?

Answer 3

Prevailing easterly winds in the tropics.

Question 4

Describe the Intertropical Convergence Zone (ITCZ).

Answer 4

Region near the equator with rising air, converging trade winds, and frequent thunderstorms.

Question 5

What is a jet stream?

Answer 5

A narrow band of high-speed winds in the upper atmosphere.

Question 6

Explain semi-permanent pressure systems.

Answer 6

Persistent high or low-pressure areas influencing global climate (e.g., Bermuda High).

Question 7

What role does the polar jet stream play?

Answer 7

It brings cold polar air southward in mid-latitudes.

Question 8

Describe El Niño.

Answer 8

A warm ocean current in the Pacific affecting global weather patterns.

Question 9

Where are most deserts located and why?

Answer 9

Around 30° latitude due to subtropical highs and sinking air.

Question 10

What are the doldrums?

Answer 10

Areas near the equator with weak winds and rising air.