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### 13 Cards in this Set

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 What does pressure do as the area over which the force distributed increases? The pressure decreases. What is the formula for pressure? Pressure = Force Area What is pressure? A force exerted on a surface. What is the unit of pressure? Pascal (N/m2) What is a fluid? A material that can easily flow. What happens as your elevation increases? Atmospheric pressure decreases. What happens when depth increases? Water pressure increases. What is a barometer? An instrument uses to measure atmospheric pressure. What is a buoyant force? The upward force exerted by a fluid on a submerged object. Why does a buoyant force make an object feel lighter? Because it acts in the direction opposite to gravity. What does Archimedes' principle state? The buoyant force acting on a submerged object is equal to the weight of the fluid the object displaces. What is Pascal's principle? When a force is applied to a confined fluid, the change in pressure is transmitted qwually to all parts of the fluid. What does a hydraulic system do? It uses liquids to transmit pressure in a confined fluid.