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Density/Pressure

Hunsicker Biology

QuestionAnswer
Pressure Force per unit area on a surface (P=Force/Area)
Density Ratio of mass/volume (increases when volume decreases)
Volume The amount of space an object occupies
Mass A measure of the amount of matter
Charle's Law V=kT (given constant pressure) Explains rising hot air
Boyle's Law V=kP (IE doubling pressure reduces volume by one half)
Specific Gravity Compares density of object to water (if>1.0 then it will sink)
"That Sucks" Boiled water lowers atmospheric pressure in flask= atmospheric pressure pushing in
Can crush Atmospheric pressure pushes down on water to "crush" can
Hot air balloon Rises since heated air=higher volume and less density
Santa Ana Wind Descending air turns=higher pressure=higher temperature
Temperature inversion Cold air sits below warm upper layer (bad smog condition)
Thermocline Depth of warm, expansive water overlying colder denser layer
Wind Movement of atmosphere from HIGH to LOW pressure
Car tire in dessert P=kT (with constant volume)
Adiabatic Temperature Drop 3 degrees F per 1000ft elevation rise (cooler mountains)
Lows (Equator & 60 degrees N/S) Draws create trade winds and polar easterlies (Storms)
Estuary Current Saline ocean water flows under outgoing fresh water
Marine Aquarium Problem Captive whales die when water density is too low
Vacuum Condition when atmosphere is sucked out of a container
Bournouli's Principle Moving currents of air/water reduces pressure (plane/upwelling)
Drafting Riding behind someone due to less air pressure (bicycling)
Ear popping Eustacean valve opens to adjust to pressure differences
Plastic bag bulges Fritos corn chips at Vail,Colorado
High Altitude Cooking Food must be cooked longer since water boils at lower temperature
Atmospheric Pressure Equivalent to 760 mm Hg or 14.7 lbs/square inch (sea level)
Barometer Device that measures atmospheric pressure (uses mercury)
STP Standard Temperature (O degrees C) and Pressure (1 Atm.)
Created by: loveabeth
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