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56 Cards in this Set

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  • Back
matter
anything that has mass and volume
mass
the amount of matter in a substance or an object
volume
the amount of space taken up by a substance
density
the mass of a given volume
melting
the process of changing state from a solid to a liquid
evaporation
the process of changing state from a liquid to a gas
sublimation
the process of changing state from a solid to a gas without going through the liquid stage
deposition
the change in state of a substance from gas directly to solid without forming a liquid
condensation
the process of changing state from a gas to a liquid
solidification
the process of changing state from a liquid to a solid by the removal of heat
melting point
the temperature at which a solid begins to liquefy
boiling point
the temperature at which a liquid changes into a gas
fluid
a form of matter that can flow liquids and gases are fluids
force
a push or a pull that acts on the object
contact force
force that affects objects they touch
action-at-a-distance force
forces that affect objects without touching them
weight
the amount of force on an object due to gravity
balanced force
forces that are equal in strength and opposite in direction
unbalanced force
forces that cause a change in the speed or direction of an object
pressure
the amount of force applied ovet a given area to an object
compression
a decrease in volume produced by a force
deformation
a change of shape of a solid without a change of volume
viscosity
the resistance of a fluid to flow
adhesion
the attraction between the molecules of two different substances in contact with each other
cohesion
the stength with which the particles of an object or fluid attract each other
flow rate
the speed at which a fluid flows from one point to another
buoyancy
the ability or tendency to float in a fluid
buoyant forces
the upward force exerted by a fluid
static pressure
the force exerted by an enclosed , non-moving fluid when pressure is applied to the fluid
dynamic pressure
the force exerted by a fluid in motion
action-at-a-distance force
forces that affect objects without touching them
weight
the amount of force on an object due to gravity
balanced force
forces that are equal in strength and opposite in direction
unbalanced force
forces that cause a change in the speed or direction of an object
pressure
the amount of force applied ovet a given area to an object
compression
a decrease in volume produced by a force
deformation
a change of shape of a solid without a change of volume
viscosity
the resistance of a fluid to flow
adhesion
the attraction between the molecules of two different substances in contact with each other
cohesion
the stength with which the particles of an object or fluid attract each other
flow rate
the speed at which a fluid flows from one point to another
buoyancy
the ability or tendency to float in a fluid
buoyant forces
the upward force exerted by a fluid
static pressure
the force exerted by an enclosed , non-moving fluid when pressure is applied to the fluid
dynamic pressure
the force exerted by a fluid in motion
hydraulics
the study of pressure in liquids
hydraulic systems
a device that transmits an applied force through the use of liquid under pressure
valve
a structure used for stopping liquids
pump
pumps liquids into a space
hydraulic multplication
using an incompressible fluid to increase and transmit a force from one point to another
pneumatics
the use of gas in and enclosed system under pressure
pneumatic multiplication
?
circulatory system
the body system that moves blood throughout the body
blood pressure
the force of the blood on the walls of the blood vessels
respiratory system
the body system that supplies bood with oxygen and removes carbon dioxide from the blood
diaphragm
a sheet of muscle in the lower chest that moves downward with each inhalation