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6.2.3a Galaxies and the scale of the Universe

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Question 3
a.

State the name of the force that holds stars together in a galaxy.

[1]
b.

Light from distant galaxies is redshifted. State what this observation indicates about the current state of the Universe.

[1]
c.

Cosmic microwave background radiation (CMBR) is detected coming from all directions in space.

Identify which cosmological theory is supported by the existence of CMBR.

[1]
d.

Explain how the expansion of the Universe has affected the wavelength of this radiation since it was emitted in the early Universe.

[2]
Markscheme

6.2.3a Galaxies and the scale of the Universe Questions

  1. IGCSE
  2. /Physics
  3. /6.2.3a Galaxies and the scale of the Universe

59 exam-style questions on CIE IGCSE Physics 6.2.3a Galaxies and the scale of the Universe. Each one has a worked solution and a mark scheme showing where the marks go.

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