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WIND

Geography

Direction

Wind direction is determined using wind vane.

How It Works

  • As the wind blows the arrow swings.
  • The arrow points in the opposite direction of the wind flow.
  • The direction is read from the cardinal compass points.
  • The arrow will point in the direction from which the wind is blowing.
  • For instance if it points S the wind is blowing from S towards N.

Wind Sock

– Used to indicate the general direction of wind flow.

– Not kept in a weather station because it doesn’t give the accurate direction of wind flow.

– Seen near airstrips for the benefit of pilots.

How it Works

  • When wind blows the bas stretches out in the direction that the wind is blowing.

Wind speed/Velocity

– Measured using anemometer.

How It Works

  • When wind bows hemispherical cups rotate.
  • The number of rotations is obtained from the metre on the lower part of the anemometer.

• The units for measuring wind are called knots.

 

See also

BUSH FALLOWING IN WEST AFRICA

MINING

MINERALS IN EAST AFRICA

PROBLEMS ENCOUNTERED IN FIELD WORK

MINERALS AND ROCKS

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