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# Physics test 3

### phases of matter

What are the 4 phases of matter solid, definite shape and volume. Liquid definite volume but not shape. Gas no definite shape or volume. Plasma, electrified gas
what is compression when you push something together which causes the object to get shorter
what is tension when you pull something apart causing it to get larger
when a spring is stretched to 10 cm how long will it be if you double the force? 20
what is the density of an object is the mass in 12 g and volume is 25 cm? will it float? .48g/cm^3 yes it will float
what affects water pressure? the depth of an object affects water pressure
what does an object weigh if it floats nothing
what is the weight of an object if it sinks the weight of the object minus the weight of the water it displaces
what is the buoyant force equal to the weight of the water displaced
what is the Bernoulli principle? when the speed of a fluid is increased as he internal pressure is decreased
when a ball is thrown does it curve up or down? down because the low pressure produced
how does an plane work the path of the air on the top of the wing is longer than on the bottom causing lift
what is boyle's law PV=PV
how do volume and pressure relate in boyle's law? they are equal and opposite
what temp does water freeze at in kelvin 273 degrees kelvin
what temp does water freeze at in C o degrees C
what temp does water freeze at in F 32 degrees F
what is absolute zero the temp at which there is no molecular motion
why is water special because it has such a high specific heat which causes it to take more time and energy to heat and the high density caused ice to float
evaporation liquid to a gas
boiling liquid to a gas
condensation gas to a liquid
dew gas to liquid
melting solid to liquid
freezing liquid to solid
sublimation solid to a gas
fusion solid to liquid
vaporization liquid to gas
Created by: 506015941

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