Cosmology Quiz
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5 questions, one answer each
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1. What is meant by red-shift?
- A. A decrease in wavelength of light from an approaching source
- B. An increase in wavelength of light from a source moving away
- C. A change in the colour of a star due to its temperature
- D. The scattering of light by dust in space
2. Which piece of evidence is used to support the Big Bang theory over the Steady State theory?
- A. The red-shift of galaxies alone
- B. Cosmic microwave background radiation
- C. The existence of the Moon
- D. The colour of the Sun
3. A galaxy twice as far from Earth as another shows a greater red-shift. What does this suggest?
- A. It is moving away faster
- B. It is moving towards Earth
- C. It is not moving at all
- D. It is closer than the other galaxy
4. Why can red-shift alone not distinguish between the Big Bang and Steady State theories?
- A. Red-shift has never actually been observed
- B. Neither theory predicts red-shift
- C. Both theories involve an expanding Universe and both predict red-shift
- D. Red-shift only applies to sound waves
5. The Steady State theory struggled to explain which observation, ultimately favouring the Big Bang theory?
- A. The existence of red-shift
- B. The cosmic microwave background radiation
- C. The number of planets in the Solar System
- D. The colour of nearby stars