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5 Written Questions

5 Matching Questions

  1. Describe friction forces.
  2. What do low pressure cells tend to do?
  3. Explain air pressure tendency.
  4. Describe the Polar High Pressure area.
  5. What are Trade Winds?
  1. a Air pressure tendency is important, along with the air pressure reading on a barometer. Falling air pressure, which corresponds to a decrease in the length of mercury in the column on a mercurial barometer, generally indicates stormy weather.
  2. b The Polar High Pressure consists of polar easterlies and the Antarctic High pressure area.
  3. c Trade Winds blow out of the equator side of the anticyclones. In the Northern Hemisphere, they are the Northeasterly Trade Winds. They are the most persistent winds in the world, blowing in the same direction about 80% of the time.
  4. d Low pressure cells tend to ascend and converge.
  5. e
    Friction forces drag winds as they move across various surfaces. This effect decreases with height above a surface, and causes air spiraling out of a high pressure cell to turn clockwise (anticyclone). Air spiraling out of a low pressure cell turns counter-clockwise (cyclone). NOTE that in the Southern Hemisphere, this effect is in reverse: high pressures produce cyclones, and low pressures produce anticyclones.

5 Multiple Choice Questions

  1. Equal pressure.
  2. The Equatorial Low Pressure area occurs along the Intertropical Convergence Zone (ITCZ) and is the area where the Trade Winds and doldrums occur.
  3. The wind direction is always reported as the direction from which the wind is blowing. Winds which blow from the west, for example, are westerlies. They blow towards the east. Winds which blow from the south are called southerlies. They blow towards the north.
  4. Equal temperature.
  5. The four factors that affect atmospheric circulation are as follows: the Coriolis Effect, gravity, friction forces, and changes in air pressure.

5 True/False Questions

  1. What are doldrums?Trade Winds blow out of the equator side of the anticyclones. In the Northern Hemisphere, they are the Northeasterly Trade Winds. They are the most persistent winds in the world, blowing in the same direction about 80% of the time.

          

  2. Isotach?Equal pressure.

          

  3. What is an isopleth?The ITCZ stands for the Intertropical Convergence Zone, which is the area along the equator where a discontinuous series of thunderstorms occurs, due to the uplift caused by the convergence of winds and solar heating of the ground along the equator.

          

  4. What does primary circulation in the atmosphere entail?Tertiary circulation is the movement of local high and low pressure cells, and parcels of air will cause local weather patterns, such as the weather patterns of a coastal city that is influenced by the body of water nearby.

          

  5. Describe the Subtropical High Pressure area.The Polar High Pressure consists of polar easterlies and the Antarctic High pressure area.

          

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