EARTH SCIENCE
SEISMOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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As you move up through the layers, the pressure increases.
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As you move down through the layers pressure increases.
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As you move down through the layers, pressure decreases.
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As you move up down through the layers, pressure remains the same.
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Detailed explanation-1: -Air pressure and density work and change together as you enter different layers of the atmosphere. As the atmosphere expands the further you get from the Earth’s surface, it becomes less dense and air pressure decreases. As you increase altitude (distance from Earth’s surface) in an airplane, air pressure changes.
Detailed explanation-2: -As we go up the layers of the atmosphere, fewer air molecules are above us. So, there will be less weight of air above us. Hence, atmospheric pressure always decreases as we move upward in the atmosphere.
Detailed explanation-3: -Atmospheric pressure is defined as the force per unit area exerted against a surface by the weight of the air above that surface. As we go up, the altitude increases the amount and the density of air above it decreases. So the pressure due to it decreases.
Detailed explanation-4: -Air pressure is the pressure exerted due to the weight of air above Earth. As we go up in the atmosphere, the air pressure reduces rapidly.