Pressure and Depth
2 marks · Easy- Milk
- 1030 kg/m³
- Kerosene
- 810 kg/m³
- Seawater
- 1025 kg/m³
Density of Liquids
Which of the three liquids would create the greatest pressure at a depth of 2 m? Justify your answer.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
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Milk, because it has the highest density and p = h × ρ × g.
Must show: correct liquid, correct reason
Also accept: Milk, because highest ρ means higher p at same depth
Common mistakes: Choosing wrong liquid by mistake or misunderstanding
Show mark scheme and worked solution
Marking points
B1 · 1 mark · Correctly identifies milk as producing greatest pressure.
B2 · 1 mark · Justifies with reference to highest density and the formula for pressure difference.
Worked solution
Milk has the highest density (1030 kg/m³). At the same depth, highest density gives highest pressure by p = h × ρ × g.