Part 1 of 2
Read the scale
state / explain
Try it yourself
state: give a concise answer. explain: give reasons and connect them to evidence.
A pupil measures a key with a ruler whose end is worn. One end of the key lines up with the 1.0 cm mark and the other end with the 6.4 cm mark. Choose the length of the key. Then explain why the pupil did not put the key at the very end of the ruler.
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Scope and sources
Cambridge IGCSE Physics 0625 · 2026–2028 v2 · Original learning materials.
Using rulers and measuring cylinders to find a length or a volume (1.1.1), measuring time intervals with clocks and digital timers (1.1.2), and finding the average of a small distance and a short time by measuring multiples, including the period of a pendulum (1.1.3), with the practical skills of tables and graphs. Vectors and scalars (1.1.4–1.1.7) are in the Resultant force module.
Apparatus, amounts and times in the experiment are illustrative. Real practical work follows a teacher-approved safety method.
Official Cambridge syllabus