Three and four mark questions

These are similar to one and two mark questions but you will be expected to write in more depth for three and four mark questions.

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Three and four mark questions usually require longer answers. The answers here give lists of valid points that could be included in your answer.

Edexcel questions courtesy of Pearson Education Ltd.

Sample question 1 - Foundation and Higher

Question

A student finds the graph shown in the figure for the stretching of a wire.

A graph showing the stretching of a wire. It shows load against extension, with the point where the wire breaks plotted also.

Describe the non-linear stretching of the wire shown in the graph. [3 marks]

Above 37.5 N there are large increases of extension for small increases in load [1]. The maximum extension of the wire is about 16.5 mm before it breaks [1]. Above 12 mm the wire keeps on extending when the load is reduced below 46 N [1].

Make sure you describe three separate features of the graph clearly and use numbers from the graph in your answer.