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5 Written questions

5 Matching questions

  1. Explain pressure gradients.
  2. What are doldrums?
  3. Isotherms are equal to what?
  4. What is the rule for naming winds?
  5. Thermal equator?
  1. a Doldrums refers to a broad east-west belt of light winds that occur along the equator where the Trade Winds from the northern and southern hemispheres converge.
  2. b
    Pressure gradients drive air from an area of high pressure to an area of low pressure, creating winds.
  3. c Equal temperature.
  4. d An isoline connecting all points of highest mean temperature.
  5. e 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.

5 Multiple choice questions

  1. The Subtropical High Pressure area consists of Westerlies, the Bermuda High, the Azores High, and the Pacific High.
  2. Equal wind speed.

  3. 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.
  4. An isopleth is a line on a weather chart that represents an equal value of some quantity.
  5. Low pressure cells tend to ascend and converge.

5 True/False questions

  1. What is the ITCZ?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.

          

  2. Describe land-sea breezes.
    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.

          

  3. What do high pressure cells tend to do?Low pressure cells tend to ascend and converge.

          

  4. What is the Jet Stream?
    The Jet Stream is a relatively narrow corridor of very strong winds near the tropopause.

          

  5. What are the rules for isopleths?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.