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Cambridge IGCSE Combined Science practice

Paper 4 structured question: Stars and the Universe

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Stars and the Universe

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Paper 4Theory (Extended)3 marks

Consider the motion of planets in our solar system.

Description

Planetary Motion

The planets orbit the Sun in elliptical paths, influenced by the Sun's gravitational force.

  1. a

    Discuss the relationship between the distance of a planet from the Sun and its orbital speed.

    Aim for approximately 3 distinct marking points.

    [3]

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Paper 4 structured question: Stars and the Universe

Paper 4Theory (Extended)2 marks

Description

Gravitational Influence in the Solar System

Planets closer to the Sun experience a stronger gravitational pull, while those further away experience a weaker pull. This affects their orbital speeds.

  1. a

    Explain how the distance from the Sun affects the orbital speed of planets.

    Aim for approximately 2 distinct marking points.

    [2]