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SELF QUIZ: CLIMATE 2
Questions | Answers
 

1. Four major causes of deserts.

  • 1) Descending air in the Hadley Cells
  • 2) Rainshadow Effect
  • 3) Cold ocean offshore.
  • 4) Being far away from a source of water

2.

Earth showing latitudes, convection cells, and prevailing winds

3. 30 degrees north and 30 degrees south latitudes. The air in the Hadley Cells descends, the air heats, the relative humidity decreases, and this decreases the chance of precipitation and a desert forms.

4. Deserts most commonly form on the west coast of continents in the northern hemisphere because ocean currents are circulating clockwise, bringing cold water from the arctic southward along the west coast of the continent. Deserts most commonly form on the west coast of continents in the southern hemisphere because ocean currents are circulating counterclockwise, bringing cold water from the antarctic northward along the west coast of the continent. The cold ocean cools the air above it. As the cooled air from above the ocean moves over the land warmed from the sun, the air temperature rises, the relative humidity decreases, and the chance of rain decreases..

5. The Rainshadow Effect occurs on the downwind side of mountain ranges because as the air is blown over the top of the mountain and descends, it heats, the relative humidity decreases, and the chance of rain decreases.