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17 Cards in this Set
- Front
- Back
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Pressure |
Equals the force exerted on a surface divided by the total area over which the force is exerted, or P=F/A |
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Increases |
If force ________ over an area, the pressure increases |
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Decreases |
If force over an area _______, the pressure decreases. |
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Atmospheric |
-air presses down on Earth with force. |
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Balanced |
Pressure can be_______ as the pressure pushing down equals the pressure pushing up. |
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Altitude |
As_________ increases, air pressure decreases. |
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Changes |
Gas pressure in a closed container _________ with volume and temperature changes. |
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Increases |
Decreasing volume _______ pressure; increasing volume _______ pressure. |
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Increasing; decreasing |
Increasing temperature _______ pressure; decreasing temperature _________ pressure. |
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Buoyant force |
Upward force on an object immersed in a fluid |
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Archimedes |
Buoyant force on an object is equal to the weight of the fluid displaced by the object |
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Density |
__________ is mass divided by volume. |
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Float |
An object will ________ in a fluid that is denser than the object. |
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Sink |
An object will ________ in a fluid that is less dense than the object. |
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Pascal's Principle |
When a force is applied to a confined fluid, an increase in pressure is transmitted equally to all parts of the fluid. |
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Hydraulic systems |
Allow people to lift heavy objects with relatively little force |
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Force pump |
When squeezed liquids will be pushed out of a_______, a closed container with a hole in it |
