Pearson Edexcel International GCSE (9–1) · PHYSICS · Section
COSMIC MICROWAVE BACKGROUND (CMB) RADIATION
15 practice questions
Practice questions
11–15 of 15
Question 11
1 mark · Normal
Answer and see the solution →Which of the following statements does NOT support the Big Bang theory?
- A.Red-shift in the spectra of galaxies
- B.Cosmic microwave background radiation
- C.Observation that the universe is expanding
- D.Blue-shift in the spectra of galaxies
Question 12
2 marks · Normal
Answer and see the solution →Describe two pieces of evidence that support the Big Bang theory.
Question 13
2 marks · Normal
Answer and see the solution →Explain why the cosmic microwave background (CMB) radiation is an important piece of evidence for the Big Bang theory.
Question 14
3 marks · Normal
Answer and see the solution →Light from a galaxy is measured, and the absorption lines are found to be shifted by 200 nm compared to the reference wavelength of 500 nm on Earth.
(a)[2 marks]Calculate the velocity of the galaxy relative to Earth. (Speed of light = 3.0 × 10^8 m/s)
(b)[1 mark]State whether the galaxy is moving towards or away from Earth.
Question 15
2 marks · Normal
Answer and see the solution →What is meant by the term ‘red-shift’ and what does it suggest about the universe?