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Cambridge IGCSE Physics practice

Paper 3 structured question: Stars

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Stars

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Paper 3Theory (Core)3 marks

Understanding the Sun and its distance from Earth.

Description

The Sun in the Milky Way

The Sun is a star located in the Milky Way galaxy. It is much closer to Earth than other stars in the Milky Way. Astronomical distances are measured in light-years.

  1. a

    Describe The significance of light-years in measuring distances in space.

    Aim for approximately 3 distinct marking points.

    [3]

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Paper 3 structured question: Stars

Paper 3Theory (Core)1 marks

Description

Galaxies and Stars

Galaxies consist of billions of stars, including the Sun, which is located in the Milky Way galaxy. Other stars in the Milky Way are much farther from Earth than the Sun. Distances in astronomy are measured in light-years, where one light-year is the distance light travels in a year in a vacuum.

  1. a

    State What is the primary component of a galaxy?

    Aim for approximately 1 distinct marking point.

    [1]