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Pressure in a Liquid Increases with Depth

Pressure in a liquid increases with depth: P = hρg, so the sideways arrows are longer lower down.

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Pressure in a Liquid Increases with Depth
Labelled

Unlabelled (practice)

Practice: can you add every label from memory?

Pressure in a Liquid Increases with Depth, Unlabelled (practice)

Drawing rules for the exam

Follow the syllabus conventions: 2 px lines, arrows for rays and forces, standard circuit symbols, and clearly labelled quantities. Neat, labelled diagrams score full marks.

Raw SVG files

Where it appears: Pressure

What this diagram shows

Pressure in a liquid increases with depth: P = hρg, so the sideways arrows are longer lower down.

Study both the labelled version and the unlabelled one on this page, then redraw it from memory and check every label.

How to draw and label it in the exam

Follow the SPM drawing conventions: use a sharp pencil and a ruler, draw rays and forces as straight lines with arrowheads showing direction, use the standard circuit symbols, and label every quantity clearly. In the exam the label is usually where the mark is.

Common labelling mistakes

  • Leaving an arrowhead off a ray, force or field line, so direction is lost.
  • Unlabelled axes, points or components, an unlabelled diagram rarely scores full marks.
  • Freehand lines where a ruler is expected, or a scale too small to read.

Source: DSKP KSSM Physics Form 4 and 5 (Versi English) (Bahagian Pembangunan Kurikulum (BPK), KPM)

Written by the spmphysics.com.my editorial team.· Updated 5 Sept 2026

Frequently asked questions

Can I practise this without a printer?
Yes, open the unlabelled version on screen and redraw it on paper, then check against the labelled one.
Which chapter is this from?
Pressure.
Do neat diagrams really earn marks?
Yes. In Paper 2 and Paper 3 the labels and correct conventions are exactly what the mark scheme rewards.

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