Quick questions on The expanding universe: Doppler, redshift and the Big Bang - SQA Higher Physics

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?

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State what happens to the observed frequency of a sound when its source moves towards you. [1 mark]

What is q2?

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A galaxy recedes at

1.5 \times 10^{7}\ \text{m s}^{-1}

. Calculate its redshift. Take

c = 3.0 \times 10^{8}\ \text{m s}^{-1}

What is q3?

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State one piece of evidence, other than galactic redshift, that supports the Big Bang. [1 mark]

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