Density and pressure Flashcards
1
Q
How to calculate density?
A
Density = mass/volume
2
Q
What is the symbol for density?
A
Rho
3
Q
What is the density of air?
A
1.2kgm-3
4
Q
What is the density of pure water?
A
1000kgm-3
5
Q
What is the density of seawater?
A
1030kgm-3 (at the surface)
6
Q
What is the density of steel?
A
8000kgm-3 (varies)
7
Q
What is the density of mercury?
A
13600kgm-3
8
Q
How would you calculate pressure?
A
Pressure = Force/Area
9
Q
What is the SI for density?
A
kgm-3
10
Q
What is the SI for pressure?
A
Nm-2 or Pa
11
Q
What does the pressure act like in a liquid or gas?
A
In all directions
12
Q
How would you calculate the pressure in a particular liquid?
A
P=h(rho)g
13
Q
How would you measure pressure? (3)
A
1) Pressure sensors and a data logger
2) A manometer
3) A Bourdon gauge
