L 10-6 Measurement of pressure; Gauges and the Barometer Flashcards
1
Q
Manometer
A
A manometer is a device used to measure the pressure of a gas trapped in a container (pressure difference)
2
Q
1 atm
A
1.013 x105 pa or N/m2
760 torr or 760 mm- Hg
3
Q
Barometer
A
Instruments which measure atmospheric
pressure
4
Q
what is the shape of the manometer?
A
it is u - shaped
5
Q
how does the barometer work?
A
It works on the principle that the weight of the
mercury should balance the atmospheric
pressure.
6
Q
If its weight less than the air
barometer
A
it will rise
7
Q
If it is more than the air
barometer
A
the level will reduce
