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BJU Physical Sci 15

BJU Physical Science - Ch 8

QuestionAnswer
Principle stating that the buoyant force exerted on an immersed body is equal to the weight of the fluid displaced. Archimedes' principle
A streamlined shape designed to produce lift as it moves through the air or as air moves past it. air foil
Principle stating that the total energy (represented by kinetic energy, potential energy, and pressure) for a confined ideal fluid flowing through a pipe is conserved at all locations within the pipe. Bernoulli's principle
Law stating that the volume of a confined gas is inversely proportional to the pressure it exerts, if the temperature remains constant. Boyle's law
Law stating that the volume of a confined gas at constant pressure is directly proportional to its Kelvin temperature. Charles's law
The study of how fluid moves and how forces and energy are transmitted through fluids. Subdivided into hydrostatics and hydrodynamics. fluid mechanics
A property of all fluids in which pressure is exerted equally in all directions at any point in the fluid. fluid pressure
Machines which use fluid to transmit or increase force. It uses Pascal's principle to convert a small force exerted on a small diameter piston to a large force exerted by a large diameter piston to do work. hydraulic machine
The SI unit of pressure equal to one Newton of force over a square meter (N/m x m). pascal
Principle stating that changes in pressure on the surface of a confined fluid are distributed equally throughout the fluid and at all points on the fluid's container. Pascal's principle
The force pushing directly on a given surface. pressure
An instrument for measuring atmospheric pressure that consists of a sealed flexible canister that expands and contracts with changes in air pressure, moving a pointer to indicate pressure on a scale. aneroid barometer
A lifting force exerted by a fluid on an immersed object. buoyant force
The tendency of a fluid flowing past a curved surface to follow the surface. Coanda effect
A mechanical device connected to a fluid system designed to indicate pressure of a gas or liquid. gauge
The area of physics dealing with the transfer of forces and work done by confine fluids according to Pascal's principle. hydraulics
Water pressure due only to depth in a body of water. hydrostatic pressure
The supporting force on an air foil or hydrofoil created as it moves through a fluid. lift
An instrument that measures atmospheric pressure. It consists of sealed glass tube of mercury containing a vacuum. The meniscus of the column indicates air pressure on a calibrated scale. mercury barometer
The ratio of a substance's density to water's density; a unit less quantity numerically equal to the density of the substance. Also called relative density. specific gravity
A specially designed constriction in a pipe, used to measure fluid flow rate by comparing the differences in fluid pressure before and within the constriction that occur according to Bernoulli's principle. venturi
Created by: heidio on 2009-01-03



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