Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
23 Cards in this Set
- Front
- Back
|
Force
|
Push or pull on an object
|
|
|
Dalton’s law
|
Total pressure exerted is equal to sum pressure produce
|
|
|
Air pressure
|
Weight per unit of the air column
|
|
|
Weight
|
force exerted by gravity on a mass
|
|
|
Average air pressure at sea level
|
Equivalent to weight exerted by earth’s gravity on an area of one square cm by a mass of approximately 1.o kg
|
|
|
Barometer
|
Instrument used to measure air pressure
|
|
|
Mercury barometer
|
The use of mercury to measure air pressure
|
|
|
Average air pressure at sea level w/ mercury barometer
|
Height of the mercury column changes as air pressure changes
|
|
|
Aneroid barometer
|
more portable barometer
|
|
|
Air pressure tendency
|
Change of air pressure over a specific time interval
|
|
|
Barograph
|
Provides a continues trace of air pressure variations with time
|
|
|
Pa (pascal)
|
Standard metric unit of pressure
|
|
|
(mb) millibar
|
Common unit of air pressure 1 mb equals 100 pa
|
|
|
Air density
|
Mass of molecules per unit volume
|
|
|
Number density
|
Number of gas molecules per unit volume
|
|
|
Standard atmosphere
|
State of the atmosphere average for all latitudes and seasons
|
|
|
Altimeter
|
Monitors altitude
|
|
|
Abogadro's law
|
Equals volumes of all gases measured under the same conditions of temperature and pressure contains the same number of molecules
|
|
|
Convergence
|
winds blow away or towards from the same location
|
|
|
Divergence
|
Wind speed changes in downstream directions
|
|
|
Isobars
|
is a line passing through a location having the same air pressure
|
|
|
Expansional cooling
|
whenever a gas expands the temperature of the gas drops
|
|
|
Compressional Warming
|
Whenever a gas compresses the temperature increases
|
