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Concept Summary Batesville High School Science

Liquids. Concept Summary Batesville High School Science. Pressure. Pressure depends on: The applied force - more force means more pressure The area over which the force is applied - more area means less pressure Force moves you - pressure determines how it feels . Pressure.

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Concept Summary Batesville High School Science

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  1. Liquids Concept Summary Batesville High School Science

  2. Pressure • Pressure depends on: • The applied force - more force means more pressure • The area over which the force is applied - more area means less pressure • Force moves you - pressure determines how it feels.

  3. Pressure • Pressure = force/area • Common units of pressure: • English system: lbs/in2 (ppi) • Metric system: 1 Newton/m2 = 1 Pascal • 1 kiloPascal = 1000 Pascal

  4. Liquid Pressure • The force a liquid exerts on the bottom of a container equals the weight of the liquid. • The pressure a liquid exerts on the bottom of a container depends only on the density of the liquid and the depth of the container. • Pressure = weight density x depth

  5. Buoyant Force • Objects immersed in a liquid experience an upward buoyant force. • The buoyant force is due to the difference in pressure (and force) on the top and bottom of the object.

  6. Archimedes’ Principle • The buoyant force on an object equals the weight of the liquid displaced (moved out of the way) by the object.

  7. Sinking & Floating • If you put an object into a liquid, it: • Sinks if the object is more dense than the liquid. • Floats if the object is less dense than the liquid. • Neither sinks nor floats if the object has the same density as the liquid.

  8. Principle of Flotation • A floating object displaces a weight of liquid equal to its own weight.

  9. Pascal’s Principle • A change in pressure at any point in a confined liquid is transmitted undiminished to all points and all directions of the liquid.

  10. The End

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