Question 3
In activity 15.1 the liquid stands at the same level in all five differently shaped tubes. What does this show liquid pressure depends on?
The right answer is the one marked above.
The vertical height of the liquid column. The tubes are unalike in shape, but the pressures where they are fixed are equal, so the liquid rises to the same height in each one.
Tube a in the figure holds more liquid than tube e, yet the pressures at the foot of the two are equal — so neither volume nor shape can be the answer.