Question 13
FThe Figure shows a timeline of some important events in the study of the origin of the Universe.
Figure
a.[1]
Use the Figure to give the year in which the evidence that led most scientists to accept the Big Bang theory was discovered.
b.[2]
Between 1948 and 1965, scientists could not decide whether the Big Bang theory or the Steady State theory was correct.
Explain why.
c.[3]
Explain how the discovery of the cosmic microwave background (CMB) radiation led to the Big Bang theory becoming the currently accepted model.
7.2 The Universe and red-shift Questions
94 exam-style questions on Edexcel GCSE Physics 7.2 The Universe and red-shift, covering 7.2.1 Big Bang and Steady State theories, 7.2.2 Evidence for the Big Bang, 7.2.3 The Doppler effect and red-shift, 7.2.4 Red-shift as evidence for an expanding Universe, and 7.2.5 The CMB and the accepted model. Each one has a worked solution and a mark scheme showing where the marks go.