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25 terms

Physics B States of Matter

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Pressure
Force per square meter
Pressure
F/A unit: Pascals
Pascal
Unit for pressure
Pascals Principle
Any change in pressure applied at any point on a confined fluid is transmitted undiminished throughout the fluid
Hydraulics
A technology that uses Pascal's Principle to compress a fluid which amplifies a force
Buoyant
(Blank) Force is the upward force exerted on an object submerged in a fluid
Fb
(density of fluid)(volume of fluid)(9.8)
Fg
(density of object)(vol of object)(9.8)
or
(mass)(9.8)
Archimedes
this principle states that the buoyant force exerted on an object submerged in water is equal to the weight of the water displaced.
Bernoulli
This principle states, as the velocity of a fluid increases the pressure it exerts decreases
Flight
Bernoulli's Principle helps us explain how (blank) works.
Boats
Archimedes' Principle helps us explain how (blank) float.
Cohesive
these forces exist between like substances. "co-workers"
Adhesion
these forces exist between two unlike substances. "Adding two things together"
Surface Tension
the result of cohesive forces and make a fluid contract to its smallest possible area.
Capillary Action
occurs when a narrow glass tube is placed in a fluid and that fluid moves up the tube. Due to adhesion.
Expansion
Thermal (blank) occurs when a substance is exposed to various temperatures.
Fluid
a (blank) has no definite shape and can flow
Newton
unit for force.
low
(blank) pressure exists when air is moving from the ground up. This causes rainny weather.
high
(blank) pressure exists when air is moving from high altitudes down toward the ground. This results in fair weather.
pressure
winds are the result in differences between air (blank).
Meniscus
The concave bend when water is placed in a graduated cylindar. Due to adhesive forces between the cylidar and the water.
Linear
(blank) expansion occurs when an object changes its length due to a change in temperature
Volume
(blank) expansion occurs when a fluid changes due to change in temperature