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20 Cards in this Set

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Archimedes' principle
the greek mathematician Archimedes stated that the buoyant force on an object is a fluid is equal to the weight of the fluid displaced bye the object.
bermoulli's principle
the swiss scientist daniel bernoulli stated that as the velocity of a fluid increases, the pressure exerted by the fluid decreases.
boyle's law
british scientist robert boyle stated that the volume of a gas decreases when the pressure increases, provided the temperature stays the same.
buoyant force
ability of a fluid to exert an upward force on an object inersed in the fluid.
charle's law
french scientist jacques charles stated that the volume of a gas increases when the temperature increases, provided the pressure stays the same.
condensation
the change of a substance from a gas to a liquid, which usually takes place when a gas is cooled to or below its boiling point.
crystal
in most solids, the arangements of particles in repeating geometric patterns
evaporation
the gradual change of a substance from a liquid to a gas at temperature below the boiling point.
heat of fusion
the amount of energy needed to change a material from the solid state to the liquid state.
heat of vaporization
the amount of evergy needed to change a liquid to a gas.
kinetic theory of matter
the idea that all matter is made up of constantly moving, tiny particles.
pascal
the SI unit of pressure.
pascal's principle
french scientist blaise pascal stated that pressure applied to a fluid is transmitted unchanged through the liquid.
plasma
a gaslike mixture of charged and negatively charged particles that exists at extremly high temperatures.
polluted water
water that contains high levels of unwanted substances that may be harmful to living things.
pressure
the amount ot force exited per unit of area.
states of matter
any of the four conditions in which matter can exist
thermal expanstion
a characteristic of all matter that causes it to expand when heated, and contract when cooled.
thermal pollution
pouution caused when wasts heat rises the temperature of the environment
ventri effect
reduction in pressure of a fluid resulting from the speed increase as fluids are forced to flow faster through narrow spaces.