1 (a) Figure 1 shows an object under the surface of the sea - Edexcel - GCSE Physics - Question 1 - 2020 - Paper 1
Question 1
1 (a) Figure 1 shows an object under the surface of the sea.
(i) Which arrow shows where the pressure on the object is greatest?
A
B
C
D
Figure 2 shows ... show full transcript
Worked Solution & Example Answer:1 (a) Figure 1 shows an object under the surface of the sea - Edexcel - GCSE Physics - Question 1 - 2020 - Paper 1
Step 1
Which arrow shows where the pressure on the object is greatest?
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Answer
The arrow labeled C shows where the pressure is greatest on the object, as it is directed downward towards the object and away from the surface.
Step 2
What is the pressure due to the water on the top surface of block Y?
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Answer
The pressure due to the water on block Y is twice the pressure on block X. This is because pressure increases with area and since area Y is 4 times bigger than area X, the pressure on Y would be greater.
Step 3
State the depth shown on the meter in Figure 3.
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Answer
The depth shown is dependent on the specific meter reading in the image, and the unit is meters (m).
Step 4
State how the pressure of the water on the diver changes as the diver swims down from the surface of the lake.
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Answer
As the diver swims down, the pressure of the water on the diver increases due to the increase in the depth of water above the diver.
Step 5
State why the total pressure on the diver is greater than just the pressure due to the water above the diver.
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Answer
The total pressure on the diver includes both the pressure from the water above and atmospheric pressure acting on the diver, thus resulting in a greater total pressure.
Step 6
State two factors that affect the pressure of the atmosphere on the aeroplane as the aeroplane goes higher in the atmosphere.
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Answer
Height of atmosphere (above aeroplane)
Density of atmosphere
Temperature of the atmosphere
These factors contribute to the decreasing atmospheric pressure as altitude increases.
