Pressure and depth
1 mark · EasyState the equation that relates the pressure difference in a liquid to its density, the height of the column, and gravitational field strength.
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p = h × ρ × g
Also accept: p = h x ρ x g; p = hρg
Common mistakes: mixing up symbols for pressure (p) and density (ρ); using volume instead of height
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Marking points
A1 · 1 mark · Correct equation given: p = h × ρ × g or equivalent
Worked solution
The equation is: p = h × ρ × g