Aadya Isai

Sometimes we want high pressure and sometimes we want low pressure. Here is how high and low pressure help us.

How does pressure increases/ decrease and why?

Pressure increases when the force becomes stronger or the area becomes smaller, because that changes how the force spreads across a surface. When you increase the force, you’re pushing harder, so each part of the surface feels more force. When you decrease the area, the same force is concentrated in a smaller space, which also increases pressure.

For example, if you press a balloon on one nail, it bursts easily because all your force is acting on the tiny tip of the nail—small area means high pressure. But if you press the balloon on a bed of nails, it doesn’t burst, because your force spreads over many nails, making the total area larger and the pressure lower.

Pressure decreases when the force becomes weaker or the area becomes larger, because the force spreads out more over the surface. When you reduce the force, you’re pushing less, so each part of the surface feels less force. When you increase the area, the same force is spread across a bigger space, which reduces pressure.

Examples:

Sharks have Sharp teeth so that, when they bit, the force of their jaws will create enough pressure to crush their prey.

Camels have wide feet which helps them to spread their weight over a large area. So, when the pressure is distributed it helps the camel stay on top of the sand without sinking.