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What can you recall?
state / identify / determine / describe / explain
Recall and explain
Answer from memory. (a) Apart from its motion, state what a force can change about an object. (b) A pupil’s results for a spring are in the table. One reading is anomalous. Identify it, and determine the extension it should have been. (c) Describe how she should draw the line on her load–extension graph. (d) Explain why you read the pointer with your eye level with it.
state: give a concise answer. identify: name or select. determine: find the answer from the information given. describe: give the features or what happens. explain: give reasons and connect them to evidence.
| load / N | extension / cm |
|---|---|
| 0 | 0 |
| 0.5 | 1.7 |
| 1.0 | 3.4 |
| 1.5 | 5.9 |
| 2.0 | 6.8 |
| 2.5 | 8.5 |
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Scope and sources
Cambridge IGCSE Physics 0625 · 2026–2028 v2 · Original learning materials.
Forces may produce changes in the size and shape of an object (1.5.1.1); sketch, plot and interpret load–extension graphs for an elastic solid and describe the associated experimental procedures (1.5.1.2); the spring constant as force per unit extension, k = F/x (1.5.1.9); the limit of proportionality of a load–extension graph, identified on the graph (1.5.1.10). 1.5.1.9 and 1.5.1.10 are Supplement. The elastic limit is not required and is not used. Resultant forces and F = ma are in Resultant force, friction and drag in Acceleration, falling and drag, moments in Moments and balance, and elastic potential energy in Energy, work and power.
Apparatus, amounts and times in the experiment are illustrative. Real practical work follows a teacher-approved safety method.
Official Cambridge syllabus