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Sci. 3-1 Fluids and Pressure Pages 62-67. A. Fluid - any material that can flow and that takes the shape of its container. (liquids or gases). B. All fluids exert pressure.

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## Sci. 3-1 Fluids and Pressure Pages 62-67

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**Sci. 3-1**Fluids and Pressure Pages 62-67**A. Fluid- any material that can flow and that takes the**shape of its container. (liquids or gases)**Pressure- the amount of force (push) exerted on a given**area. Measured in Pascal. 1Pa = 1N on an area of 1 squared meter • Force = Pressure x Area • F = P x A**Atmospheric Pressure- the pressure caused by the weight of**the atmosphere. • 1) atmosphere exerts a pressure of about 101,300 N per sq. m or 101,300Pa • 2) Air pressure varies depending where you are in the atmosphere.**E. Pressure depends on depth. The deeper down, the more**pressure. F. Water pressure increases with depth because of gravity.**G. Water exerts more pressure because water is denser than**air.**H. Fluids flow from regions of high pressure to low**pressure.**I. Pascal’s Principle- a change in pressure at any point**in an enclosed fluid will be transmitted equally to ALL parts of the fluid.**1) hydraulic devices use liquid because they cannot be**squeezed into smaller spaces. Hydraulics use liquids to transmit pressure.

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