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Factors Influencing Atmospheric Pressure
1. Altitude
- Pressure decreases with increase in altitude because the column of air becomes shorter hence it exerts less weight.
2. Temperature
- When air is heated it expands and exerts pressure over a large area resulting in reduced pressure.
When it’s cooled it contracts and exerts pressure over a small area resulting in increased pressure.
3. Rotation of the earth
Rotation pushes air masses from poles towards the equator causing air to spread out and occupy more space causing it to expand making pressure to decrease.
- When air from the equator moves towards the poles it occupies less space causing it to contract resulting into high pressure
Githiari answered the question on October 25, 2017 at 13:29
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