Pearson Edexcel International GCSE in Physics · 4PH1 · Free · no account needed
Pressure, and Pressure in Liquids — exam questions
10 original Incandio exam-style questions on Pressure, and Pressure in Liquids, 25 marks, about 25 minutes of writing. Each one carries the command word, the tariff and the specification statement it assesses, exactly as a paper presents them. This is an original Incandio practice question, written to reflect the structure and demands of the qualification. It is not an official Pearson Edexcel past-paper question.
This is the practice set for Pressure, and Pressure in Liquids — the lesson that teaches it. Read the lesson first if the idea is new; come here when you want to find out whether you can turn it into marks. Completely free, no account needed to read.
What these questions ask of you
8 command words run through this set, and on Pearson Edexcel International GCSE Physics each one means something precise. Answering the wrong command is the commonest way a candidate who understands the lesson still loses the mark.
- Which (1 mark)
- one option chosen from the set given
- State (1 mark)
- one precise fact or definition
- Calculate (1–5 marks)
- select the equation, substitute, evaluate — and state the unit Misread as: giving a bare number with no equation and no unit
- Determine (1–4 marks)
- a value obtained by combining a reading or gradient with a relationship
- Explain (2–4 marks)
- the physics that causes it, set out as a line of reasoning Misread as: describing the change without giving the physical reason for it
- Give (1–2 marks)
- a short factual answer
- Show that (2–4 marks)
- a derivation to a printed value, worked to at least one more decimal place than the value given Misread as: restating the printed value instead of deriving it
- Suggest (1–3 marks)
- a plausible answer applying taught physics to an unfamiliar arrangement
Assessed on Paper 1 (4PH1/1P) and Paper 2 (4PH1/2P), against AO1, AO2, AO3.
Where these sit in the specification
Pearson Edexcel International GCSE Physics (4PH1) — statements 5.5 · 5.6 · 5.7. Incandio is aligned to this specification; it is not published by, endorsed by or affiliated with Pearson, and it reproduces none of Pearson's wording.
The 10 questions
Answer them on paper, then open the lesson's exam practice to have them marked. The mark scheme, the accepted and rejected answers and the annotated model answer are in Incandio and are not printed here — an answer beside its question is not practice.
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A diver descends into a freshwater lake wearing a pressure gauge. The gauge reads the pressure due to the water alone, not counting the atmosphere above it. The density of the water is 1000 kg/m³ and the gravitational field strength is 10 N/kg.
Table 1 — the diver's gauge readings Depth below the surface / m Pressure due to the water / kPa 0 0 5 50 10 100 15 150 20 200 (a)
(1)Give
Give the pressure due to the water at a depth of 15 m, using Table 1.
A diver descends into a freshwater lake wearing a pressure gauge. The gauge reads the pressure due to the water alone, not counting the atmosphere above it. The density of the water is 1000 kg/m³ and the gravitational field strength is 10 N/kg.
Table 1 — the diver's gauge readings Depth below the surface / m Pressure due to the water / kPa 0 0 5 50 10 100 15 150 20 200 pressure due to the water = ............................ kPa
(b)
(3)Show that
Show that the readings in Table 1 are consistent with a water density of 1000 kg/m³.
A diver descends into a freshwater lake wearing a pressure gauge. The gauge reads the pressure due to the water alone, not counting the atmosphere above it. The density of the water is 1000 kg/m³ and the gravitational field strength is 10 N/kg.
Table 1 — the diver's gauge readings Depth below the surface / m Pressure due to the water / kPa 0 0 5 50 10 100 15 150 20 200 (c)
(3)Suggest
Suggest what the gauge would read at 10 m in a narrow flooded mineshaft rather than in the lake.
A diver descends into a freshwater lake wearing a pressure gauge. The gauge reads the pressure due to the water alone, not counting the atmosphere above it. The density of the water is 1000 kg/m³ and the gravitational field strength is 10 N/kg.
Table 1 — the diver's gauge readings Depth below the surface / m Pressure due to the water / kPa 0 0 5 50 10 100 15 150 20 200 (Total for Question 1 = 7 marks)
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(1)Which
Which is equal to one pascal?
Equivalent A one newton B one newton metre C one newton per square metre D one newton per metre (Total for Question 2 = 1 mark)
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(1)State
State the directions in which the pressure at a point in a liquid at rest acts.
(Total for Question 3 = 1 mark)
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(3)Calculate
A crate weighing 900 N rests on the floor on a base of area 0.60 m². Calculate the pressure it exerts on the floor.
............................ Pa
(Total for Question 4 = 3 marks)
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(4)Determine
A drawing pin is pushed into a board with a force of 12 N. The tip has an area of 0.050 mm². Determine the pressure at the tip in pascals.
pressure = ............................ Pa
(Total for Question 5 = 4 marks)
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(3)Explain
Explain why a tractor designed for soft ground is fitted with very wide tyres.
(Total for Question 6 = 3 marks)
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(3)Calculate
Calculate the pressure due to the water at the bottom of a swimming pool 2.5 m deep. The density of water is 1000 kg/m³ and g is 10 N/kg.
pressure due to the water = ............................ Pa
(Total for Question 7 = 3 marks)
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(3)Explain
Explain why the wall of a dam is built much thicker at the bottom than at the top.
Figure 1 — pressure increasing with depth
(Total for Question 8 = 3 marks)
Have them marked, then defend the answer
Practice tells you the mark; teaching it back tells you whether you understand it. On Incandio a topic counts as mastered only once you have taught it and defended it.
- Mark these questions — 10 questions, marked on Incandio against the authored scheme, with the mistake you actually made named.
- Teach it — explain Pressure, and Pressure in Liquids to Ember, an AI pupil who does not have it yet and asks the awkward question.
- Defend it — argue it against Blaise Pascal over three rounds, marked against descriptors you can read first.
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Back to the lesson
- Pressure, and Pressure in Liquids — Why a drawing pin works, why pressure at a point pushes every way at once, and why depth is the only thing that matters underwater.
- All of Incandio Physics · Incandio Exam Practice