Science 7th Grade Science Explorer Ch. 3 Motion Forces and Energy
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Created by:
Isabelmeshulam98 on December 16, 2010
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11 terms
Terms | Definitions |
|---|---|
 Archimedes' Principle | The rule that the buoyant force on an object is equal to the weight of the fluid the object displaces. |
| barometer | An instrument used to measure atmospheric pressure. |
| Bernoulli's principle | The rule that a stream of fast-moving fluid exerts less pressure than the surrounding fluid. |
| buoyant force | The upward force exerted by a fluid on a submerged object. |
| density | The mass of a substance contained in a unit of volume. |
| fluid | A material that can easily flow. |
| hydraulic system | A system that multiplies force by transmitting pressure from a small surface area through a confined fluid to a larger surface area. |
| lift | An upward force. |
| pascal | A unit of pressure equal to 1 newton per square meter. |
| Pascal's principle | The rule that when force is applied to a confined fluid, the increase in pressure is transmitted equally to all parts of a fluid. |
| pressure | The force exerted on a surface divided by the total area over which the force is exerted. |
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