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Explain how pressure changes based on the amount of force applied and the area over which it is distributed, using common real-life situations as examples.

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  • Practise with linked questions.
Cambridge IGCSE Combined ScienceMotion, forces and energyCore content

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Quick explanation

Explain how pressure changes based on the amount of force applied and the area over which it is distributed, using common real-life situations as examples

  • This point belongs to Pressure, especially Pressure outcomes.
  • You need to be able to explain how pressure changes based on the amount of force applied and the area over which it is distributed, using common real-life situations as examples.
  • The key ideas to know are Describe, Explain, and Discuss.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DescribeExplainDiscuss

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Paper 3 structured question: Pressure

Paper 3Theory (Core)2 marks

Description

Pressure and Force

Consider a scenario where a person uses a sharp knife and a blunt knife to cut through the same material. The sharp knife cuts easily, while the blunt knife struggles.

  1. a

    Explain how the sharp knife is able to cut through the material more effectively than the blunt knife.

    Aim for approximately 2 distinct marking points.

    [2]
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Cambridge IGCSECombined Science resources