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Edexcel GCSE Astronomy Topic 16 Cosmology overview quiz quiz

11questions. Pick an answer and you'll see why right away.

  1. What does the redshift of a distant galaxy tell us?

  2. What is Hubble's law?

  3. A galaxy recedes at 2000 km/s. Using H0 = 68 km/s/Mpc, what is its distance?

  4. A spectral line at 500 nm is observed at 510 nm. What does this indicate?

  5. What does the Hubble constant let astronomers estimate?

  6. Which theories does the observed expansion of the Universe support?

  7. What is the strongest evidence that makes the Big Bang the accepted model?

  8. Why is the cosmic microwave background significant for the Big Bang theory?

  9. What is dark matter?

  10. What is dark energy thought to be doing?

  11. Why is redshift alone not enough to prove the Big Bang?