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Pressure in fluids

Pressure in fluids. When you swim underwater, you might notice the pressure of water around you. But did you know that there is also pressure around you when you are out water?.

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Pressure in fluids

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  1. Pressure in fluids

  2. When you swim underwater, you might notice the pressure of water around you. But did you know that there is also pressure around you when you are out water?

  3. Pressure is the amount of force applied to a given area . Air is a fluid , and it exerts pressure around you all the time . Air pressure is the reason why your ears may "pop" when you change altitude quickly

  4. Confined liquids are any fluids in a closed system. Confined fluids can move around within the system, but they cannot enter or leave the system E.g. The blood moving through your body is a confined fluid (Providing you don't cut yourself ! )

  5. Force is measured in newtons(N). Area is often measured in square metres (m2). • Pressure is newtons per metre square(N/m2) - also called a Pascal (Pa) after Blaise Pascal, a French scientist. • 1000 pascals is called a kilopascal - compression is a decrease in volume caused by a force • Gases are compressible because their particles can be squeezed closer together into a smaller volume. The space between the particles is already so small, liquids and solids are almost incompressible

  6. Fluid systems A fluid system is a group of parts, including at least one fluid, that interact with each other and function together as a whole . The French scientist, Blaise Pascal investigated what happens when a force is applied to a fluid in a close system. After many experiments, a law was developed to describe his and other's observations. Pascal's law states that after force is applied to an enclosed fluid, the increase in pressure is transmitted equally to all parts of the fluid

  7. Hydraulic systems Hydraulics is the study of pressure in liquids. Devices that transmit applied forces through a liquid to move something else, because of pressure, are called hydraulic system For e.g. : Snow plow blade

  8. Pneumatic system They are similar to hydraulic systems, except that gases are used, instead of liquids - they operate on the principle that gases can be compressed For example : Jack hammer

  9. The End ☺

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