Question

Questions ⤵️

● what is atmosphere ?
● which two gases make the bulk of the atmosphere ?
● what is air pressure ?


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Answer 1

1. An atmosphere is a layer or a set of layers of gases surrounding a planet or other material body, that is held in place by the gravity of that body. An atmosphere is more likely to be retained if the gravity it is subject to is high and the temperature of the atmosphere is low.

2. The two gases that make the bulk of the atmosphere are: Oxygen (21%) Nitrogen (78%).

3. That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth. Atmospheric pressure is commonly measured with a barometer. ... Meteorologists describe the atmospheric pressure by how high the mercury rises.

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Answer 2

Answer:

The definition øf the Air Pressure is the force exerted onto the surface by the weight of the air . An example of air pressure is the average sea-level air pressure øf 101 .325 KPA.

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