Pressure Flashcards
1
Q
Give the equation for pressure
A
P = F/A
2
Q
What are the units for pressure
A
Pascals, Pa
3
Q
Pressure in a fluid ______ with depth. Why?
A
Increases, because it is caused by the gravitational force of the fluid above that point
4
Q
What does an object in a fluid experience as a result of pressure?
A
Forces at right angles to all of its surfaces
5
Q
Describe a simple mercury barometer
A
Atmospheric pressure balances a column of mercury , so its height can be measured to give an indication of pressure
6
Q
What is a manometer
A
A device used to measure pressure
7
Q
Describe how manometers measure pressure
A
They contain a glass tube (in the shape of
a U) filled with liquid (eg. mercury). It
measures the difference in pressure
between the fluids each arm is
submerged in.
