What is Wind?

Wind is known as the flow of air. It is gases in the atmosphere, that are invisible and is the air that moves horizontally. Wind blows of areas of high pressure, to areas with low pressure. There are different types of winds, all of which are created by differences in temperatures within our atmosphere.

If wind is invisible, How are we able to measure it? Scientists measure wind depending on the direction the wind is coming from. This is known as the compass direction. Prevailing win id is wind that is most often observed in a particular region. There are a few instruments that scientists can use to measure wind as well; they are:

• Wind Vane-used to determine the direction of the wind (image 1)
  
• Anemometer-used to measure wind speed (image 2)
  
• Aerovane-measures both speed, and direction (image 3)
  
• Radiosonde-is a weather balloon (image 4)