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Abeka Physics Chapter 3
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Gravity
This set covers all bold terms and important concepts in Abeka Physics Chapter 3: "The Liquid State" (pages 32-48).
Terms in this set (39)
hydrologic system
term for the water cycle
surface tension
term for a liquid's resistance to increase its surface area
adhesion
term for attraction between different kinds of molecules
cohesion
term for attraction between the same kinds of molecules
capillary tubes
tubes thin enough to show the effect of a higher final level of water
capillarity
term for the tendency of a liquid to rise in a narrow tube
meniscus
a curved surface of water inside a tube
concave
Since the edges of water reach outward in a glass tube, the meniscus is ______.
convex
Since the edges of mercury reach inward in a glass tube, the meniscus is ______.
hydrostatics
term for the study of liquids at rest
force
any push or pull on an object
normal
The force exerted by a liquid on a surface is always ____, or perpendicular, to the surface.
pressure
term for the amount of force brought to bear on a unit area
P = F / A and P = pgh
formulas for pressure
Fw = pvg
formula for the force of weight
p = m/v
formula for density
V = Ah
formula for the volume of a cylinder
F = apgh and F = AP
formulas for force on the bottom of a container
F = 1/2 Apgh
formula for force on the wall of a container
P = 1/2 pgh
formula for pressure on the wall of a container
law of liquid pressure
name for the equation P = pgh
water head
term for the distance below the highest level of water in a connected system, represented by "h"
Pascal's principle
principle that states that the pressure applied to any surface of a confined liquid is transmitted equally in every direction throughout the liquid
hydraulic device
term for any device that uses a confined liquid to multiply force
buoyant force
term for the difference between downward force and upward force on an object in a liquid
Archimedes' principle
principle that states that the buoyant force acting on a body submerged in a liquid is equal to the weight of the liquid displaced by that body
hydrodynamics
term for the study of liquids in motion
viscosity
term for a liquid's resistance to flow because of molecular attraction
principle of viscosity
term for the inverse relationship between flow rate and viscosity
poise
the units by which viscosity is measured
cavitation
term for the production of tiny vapor bubbbles within a real liquid as it flows through a pipe
laminar flow
term for an ideal liquid's tendency to flow in straight lines throughout the cross-sectional area
eddy currents
term for the currents that swirl against the flow of a real liquid due to friction between the liquid and the pipe
volume flow rate
measures the total volume of a liquid flowing past a point in one second, in m^3/s
principle of continuity
principle that states that the volume flow rate at any two points in a pipe must be constant
A1V1 = A2V2
formula for the principle of continutity
lateral pressure
term for the pressure at the walls of a channel, or on any surface in contact with a moving liquid
decreases
As lateral pressure increases, velocity squared _____.
Bernoulli's principle
term for the inverse relationship between lateral pressure and velocity squared
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