Physics Unit 5

Front 1

fluids

Back 1

liquids and gases that flow and have no definite shape of their own

Front 2

pressure

Back 2

the force on a surface, divided by the surface's area

Front 3

pascal

Back 3

the SI unit of pressure

Front 4

combined gas law

Back 4

for a fixed amount of an ideal gas, the pressure times the volume, divided by the kelvin temperature, equals a constant

Front 5

ideal gas law

Back 5

for an ideal gas, the pressure times the volume is equal to the number of molecules, times the constant (R), and the kelvin temperature

Front 6

thermal expansion

Back 6

a property of all forms of matter that causes the matter to expand, becoming less dense, when heated

Front 7

plasma

Back 7

a gas-like, fluid state of matter made up of negatively charged electrons and positively charged ions that can conduct electricity

Front 8

cohesive forces

Back 8

the electromagnetic forces of attraction that like particles exert on one another (responsible for surface tension/viscosity)

Front 9

adhesive forces

Back 9

the electromagnetic forces of attraction that particles of different substances exert on one another (responsible for capillary action)

Front 10

pascals' principle

Back 10

states that any change in pressure applied at any point on a confined fluid is transmitted undiminished throughout the fluid

Front 11

buoyant force

Back 11

the upward force exerted on an object immersed in a liquid

Front 12

archimede's principle

Back 12

states than an object immersed in a fluid has an upward force on it that equals the weight of the fluid displaced by the object

Front 13

bernoulli's principle

Back 13

states that as velocity of a fluid increases, the pressure exerted by that fluid increases

Front 14

streamlines

Back 14

lines representing the flow of fluids around objects

Front 15

crystal lattice

Back 15

a fixed, regular pattern formed when the temperature of a liquid is lowered

Front 16

amorphous solid

Back 16

a substance having a definite shape and volume but lacking a regular crystal structure

Front 17

coefficient of linear expansion

Back 17

the change in length divided by the original length and the change in temperature

Front 18

coefficient of volume expansion

Back 18

the change in volume divided by the original volume and the change in temperature

Front 19

specific gravity

Back 19

ratio of the density of water