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8.2 Red-shift

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Question 30
H

Over the past century, the accepted model of how the universe is expanding has changed.

Which statement best explains why a scientific model changes over time?

[1]
A

Older scientists retire and newer scientists disagree

B

Models are changed at regular planned intervals

C

Models are changed whenever they become unpopular

D

New observations are made that the model cannot explain

Markscheme

8.2 Red-shift Questions

  1. GCSE
  2. /Physics
  3. /8.2 Red-shift

41 exam-style questions on AQA GCSE Physics 8.2 Red-shift, covering 8.2 Red-shift. Each one has a worked solution and a mark scheme showing where the marks go.

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