Question detail

Which option best applies density for Pressure in liquids (physics only) in AQA GCSE Physics Forces?

Try the question, check the answer, then read the explanation to understand the curriculum point.

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At a glance

MCQ

Type

practice

Style

Topic

Pressure and pressure differences in fluids (physics only)

Question

A. pressure = height of column x density x gravitational field strength — graph focus for density
B. This confuses force and pressure and does not answer Pressure in liquids (physics only).
C. This is too vague because it does not use the force or motion quantity named in the objective.
D. This reverses the physical cause and effect for Pressure and pressure differences in fluids (physics only).

Answer

The correct answer is: pressure = height of column x density x gravitational field strength — graph focus for density

Explanation

The correct option is pressure = height of column x density x gravitational field strength — graph focus for density. pressure = height of column x density x gravitational field strength — graph focus for density is correct because it matches the approved learning objective to (Physics only) Use the equation pressure = height of column x density x gravitational field strength. This answer belongs to Pressure in liquids (physics only) within Pressure and pressure differences in fluids (physics only), so it must use precise AQA GCSE Physics forces and motion vocabulary. The other options are wrong because they either confuse force and pressure, omit the required force or motion condition, or move away from the exact subtopic being tested.

Common mistake

Misunderstanding Pressure Equation

Students often confuse the pressure equation by incorrectly using the formula as pressure = density x height x gravitational field strength instead of pressure = height of column x density x gravitational field strength.

To fix this, students should remember that the height of the liquid column is a crucial factor in the pressure calculation and ensure they write the equation correctly as pressure = height of column x density x gravitational field strength. In Pressure in liquids (physics only), correct the mistake by naming the relevant force or motion quantity and checking force and pressure.

Related flashcards

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Pressure and pressure differences in fluids (physics only) scenario: a passenger is brought to rest over a longer stopping time. Which answer best addresses Pressure in liquids (physics only) and the objective to (Physics only) Use the equation pressure = height of column x density x gravitational field strength?