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Science vocab
Chap. 3
Question | Answer |
---|---|
Pressure | is equal to the force exerted on a surface divided by the total area over which the force is exerted |
Pascal | a unit of pressure : (Pa): 1 N/m2 = 1 Pa. |
Fluid | a material that can easily flow |
Barometer | an instrument you can use to measure atmospheric pressure |
Buoyant Force | water and other fluids exert an upward force that acts on a submerged object |
Archimedes Principle | states that the buoyant force acting on an object is equal to the weight of the fluid the object displaced |
Density | mass per unit volume |
Pascal's Principle | when force is applied to a confined fluid, the change in pressure is transmitted equally to all parts of the fluid |
Hydraulic System | a system that uses liquids to transmit pressure to a confined fluid |
Bernoulli's Principle | states that the faster a fluid moves, the less pressure the fluid exerts |
Lift | an upward force |