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Cambridge IGCSE Physics practice

Paper 4 structured question: The Universe

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Attempt questionThe Universe revisionRevise the key idea

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The Universe

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Paper 4Theory (Extended)1 marks

The Universe is observed to be expanding, with galaxies moving away from each other.

Description

Expansion of the Universe

The distance to a galaxy can be calculated using the equation d = v/H₀, where 'd' is the distance, 'v' is the velocity of the galaxy, and 'H₀' is the Hubble constant.

  1. a

    State the significance of the equation d = v/H₀ in cosmology.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 4 structured question: The Universe

Paper 4Theory (Extended)1 marks

Description

Hubble Constant Measurement

Using the Hubble constant, we can estimate the distance to galaxies and the age of the Universe.

  1. a

    State the value of the Hubble constant in km/s/Mpc.

    Aim for approximately 1 distinct marking point.

    [1]