Define the following terms i) Air ii) Wind iii) Pressure
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(i) Air is the general name for the mixture of gases that makes up the Earth's atmosphere. This gas is primarily nitrogen (78%), mixed with oxygen (21%), water vapor (variable), argon (0.9%), carbon dioxide (0.04%), and trace gases.
(ii)Wind refers to the air movement from high pressure to low-pressure areas. It can be broadly divided into Permanent, periodic and local winds. Complete answer: In simple terms, the wind is nothing but moving air. The air movement is always from high pressure to low-pressure areas.
(iii)Pressure is the force per unit area. This means that the pressure a solid object exerts on another solid surface is its weight in newtons divided by its area in square metres.
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AIR - the mixture of invisible odorless tasteless gases (such as nitrogen and oxygen) that surrounds the earth .
WIND - a natural movement of air of any velocity
PRESSURE - continuous physical force exerted on or against an object by something in contact with it.
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