# PHYSICS & PRESSURE BLOCK 9

 What has a definite shape & definite volume? Soilds What has no shape & a define volume? Liquids What has infinite volume & no shape? Gases _____ & ______ are both fluids, due to them assuming the shape of the containers in which they are placed. Gases & Liquids Sea Level PSI 14.69 PSI As an object increases in altitude, PSI to it  _________. decreases. PSI decreases 1 PSI every _, _ _ _ ft. 2,343 ft <<<< higher you go less psi. Gases are compressible, then liquids are? Liquids are considered incompressible. an area containing pressure below atmospheric pressure. Vacuum What is the reason why a container that has less pressure inside than outside? Negative Pressure (Vacuum) : Result the can will crumple. What objects apply pressure in ONE DIRECTION? Soilds What applies pressure in a downward & outward direction? Liquids What applies pressure in ALL directions? Gases + Measures atmospheric & applied pressure. PSIA ( Psi Absolute ) +Has “0” fixed at atmospheric pressure +Tire Pressure Gauge +Measures specifically applied PSIG (Psi Gauge) Pressure difference between two areas PSID (Psi Differential) This is often used for atmospheric pressure Symbol: Hg 1 inch of mercury= .49psi Inches of Mercury: good conductor Used for accurate readings of low pressure Symbol is H2O Inches of Water AuthorcarLORENZ0 ID255364 Card SetPHYSICS & PRESSURE BLOCK 9 Descriptiondasjfa Updated2014-01-06T17:50:19Z Show Answers