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Cambridge IGCSE Combined Science practice

Paper 3 structured question: Pressure

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Pressure

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Paper 3Theory (Core)3 marks

Pressure in different scenarios.

Description

Pressure and Area

A person stands on a soft surface with and without snowshoes. Without snowshoes, they sink into the surface, but with snowshoes, they do not.

  1. a

    Describe the relationship between area and pressure in this scenario.

    Aim for approximately 3 distinct marking points.

    [3]

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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]