Atmospheric pressure Flashcards
1
Q
Who created the vacuum pump ?
A
Von guericke
2
Q
What is the formula of pressure?
A
Force per area
3
Q
What is a vacuum pump
A
It is a machine for removing air from inside a chamber
4
Q
What is the relation b/n altitude and atm pressure?
A
As altitude increases atmospheric pressure decreases
5
Q
Volume of An object is affected by 2 things these are:-
A
Temperature and pressure
6
Q
What is barometer?
A
It is an instrument used to measure atmospheric pressure .
7
Q
Define aneroid barometer.
A
It is a device for measuring atmospheric pressure that uses a corrugated metal box rather that a liquid.
8
Q
Define pressure difference.
A
The relative value of the pressure of gas in different chambers
9
Q
List some Uses of air pressure
A
1.common pump(lift pump)
2.drinking straw
3.force pump
4.suction pad
