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Questions and Answers List

Question	Answer
gas and liquids are both ...?	fluids
is gas compressible?	yes
is a liquid compressible?	no
volume of gas is effected by..?	temperature pressure
when decrease pressure volume then ?	in creases
what is the first layer of the atmosphere?	Troposphere (0 - 36000ft )
what is the second layer of the atmosphere ?	Stratosphere ( 10km - 50km)
what is the third layer of the atmosphere?	Mesosphere (50km-)
pressure = ?	force per unit
atmospheric pressure at sea level is ?	14.69 psi
measurement of a force on a given area is expressed in ?	Psi
atmospheric pressure, measured in inches of mercury in glass tube at	29.92 inches or 14.7 psi @ 59 degrees F
Standard day is defined as ...?	14.7 psi or 29.92 of mercury. 59F/15C
in high humidity conditions the density of the air is less which	supports less weight
how much nitrogen is made into the atmosphere ?	78%
how much oxygen is made up into the atmosphere?	21%
In equal volumes, water vapour only weights?	62
Static pressure	the pressure of a fluid on a body when the body is at rest relative to the fluid
boyles law	when decrease pressure then volume in crease (in gases)
daltons law	If you have 2 gases that cant mix pressure will be added then the gases will = the pressure
density altitude is	calculated altitude
what is dynamic pressure ?	pressure caused by motion
if temperature is constant for a fixed mass the absolute pressure and volume of a gas are inversely, who's law is this?	boyle's law