ICSE Class 8 Answered
Discuss the factors affecting atmospheric pressure with respect to the following:
a. Temperature
b. Altitude
c. Rotation of the Earth
Asked by Topperlearning User | 22 May, 2015, 03:36: PM
Expert Answer
- Temperature: When the temperature of a place increases, the atmospheric pressure decreases. This happens because an increase in temperature results in the heating of air. Warm air expands. The molecules of the warm air become less dense and hence exert less pressure. On the contrary, a decrease in temperature makes air cool and dense. This creates a high pressure area in a region.
- Altitude: Atmospheric pressure decreases with an increase in the altitude. Air is compressible. As the gravity of the Earth pulls the molecules and gases towards the ground, the lowest layer of air get denser. This dense layer of air exerts high pressure.
- Rotation of the Earth: The rotation of the Earth causes the air at the poles to be pushed away towards the Equator. In theory, air should have been accumulated at the Equator creating a high pressure belt. However, this does not happen. On the contrary, air gets heated up at the Equator, becomes warmer and rises up creating a low pressure belt.
Answered by | 22 May, 2015, 05:36: PM
ICSE 8 - Geography
Asked by meshyadhanavath2000 | 08 Jun, 2020, 08:02: AM
ANSWERED BY EXPERT
