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What is air made up of?
When the earth was formed at the very beginning, the earth surface and earth crust had 90% nitrogen with no oxygen and carbon dioxide. …
The formation of whirlwind
When the local temperature is high, air near the ground expands and rises (low air density) to a higher level where the temperature is low (high…
The concept of wind
Wind is caused by the difference in air pressure. Wind flows from high pressure zone to low pressure zone, resulting in different direction, speed and intensity….
The concept of wind force
The wind force is generated by the air flow, the higher the air flow rate, the greater its power. The wind power, wind coverage and…
The concept of air force
When air flows across a surface, forces are generated in different directions e.g. resistance force and lifting force. When air flows under an object, dynamic…
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