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Cambridge IGCSE Physics practice

Paper 4 structured question: The Universe

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4

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1

Marks

Topic

The Universe

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Paper 4Theory (Extended)1 marks

The Cosmic Microwave Background Radiation (CMBR) is a significant aspect of cosmology.

Description

Cosmic Microwave Background Radiation

The CMBR is the remnant radiation from the early universe, now observed in the microwave region of the electromagnetic spectrum due to the expansion of the universe.

  1. a

    State the origin of the CMBR.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 4 structured question: The Universe

Paper 4Theory (Extended)3 marks

Description

CMBR and Universe Expansion

The CMBR has shifted into the microwave region due to the expansion of the universe, which affects the wavelengths of the radiation.

  1. a

    Explain how the expansion of the universe affects the CMBR.

    Aim for approximately 3 distinct marking points.

    [3]