Pressure in liquids and gases
3 marks · EasyA science teacher uses a can with small holes around the sides and fills it with water to demonstrate liquid pressure.
Describe what you would observe as water flows out of the holes when the can is full.
Explain what this demonstrates about pressure in liquids.
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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(a) Water jets out evenly from all holes in all directions.
(b) Pressure in a liquid acts equally in all directions at the same depth.
Show mark scheme and worked solution
Marking points
B1 (a) · 1 mark · Describes that water spurts out equally from all holes / in all directions.
B2 (b) · 2 marks · Explains that in a liquid at rest, pressure acts equally in all directions.
Worked solution
a) Water spurts out from each hole equally and in all directions.
b) This shows that liquid pressure acts equally in all directions at a given depth, because the water streams are similar from each hole.