Question

As we go up the layer of the atmosphere, the pressure_______.
a. Increases
b.Decreases
c.Remains
d.None of these

Answer 1

Hint: The atmosphere is constituted of layers based on temperature. These layers are ; the troposphere, stratosphere, mesosphere and thermosphere.

Complete answer: -Air pressure always decreases with the increasing altitude. The pressure at any level in the atmosphere may be analyzed as the total weight of the air above a unit area at any elevation.
-The decrease is due to the compressional influence of the air and its density. The decrease of temperature with increasing altitude in the atmosphere is called the vertical temperature gradient.
-Air pressure and density work and alter together with different layers of the atmosphere.
-As the atmosphere expands , it becomes less dense and air pressure decreases. With increase in altitude, air pressure changes.
-The atmosphere has 4 layers:
 the troposphere ,where we live that is near the surface of the earth; the stratosphere, that has the ozone layer; the mesosphere, a colder and lower density layer with 0.1% of the atmosphere; and the thermosphere, the top layer, where the air is hot but very thin.

Thus, The correct answer is Option B.

Note: Atmospheric pressure is measured with a barometer. One atmospheric pressure is 1,013 millibars, or 760 millimeters of mercury.