Why is it that the pressure much larger at the depth of the earth (ex: Mariana Trench) than it is on the surface

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I’m studying about pressure right now, and I’m wondering about this

In: Physics

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Anonymous 0 Comments

Pressure is essentially the force you get on a surface. Think of a bicycle tyre. When there is no air in it the tyre is flat and soft. Adding more air increases the pressure (the pushing force) on the inside of the tyre and makes it more rigid.

As there is more air particles in the same volume, the air is more dense. Density effects pressure.

As you go deeper down into water, the water is being compressed more by the weight of the particles above them. Its like being crushed by objects. The more objects above you, the more weight you feel.

The water at the bottom of the ocean is being crushed by the water above and causing it to be more dense as you go deeper.

As you probably know pressure is the force applied on an area. Since the area of an object stays the same as it goes deeper, the crushing force increases. Therefore higher pressure.

It will also help to know that gasses and liquids create a pushing force on an object because the particles are repelling off of each other. If the gas or liquid is more dense, the repelling force is higher. A bit like magnets when the same poles are pushed together. The closer they are, the stronger the force. That’s why density affects pressure.

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