The Science of Time and Evolution Quiz
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Questions and Answers

What is a standard ruler in astronomy?

  • An object whose intrinsic size is known (correct)
  • A ruler used by astronomers for measurements
  • A ruler that appears larger in space
  • An imaginary ruler used for distance estimations

    • What did Hubble observe about the spectral lines of nearby galaxies?

  • They remained unchanged
  • They were redshifted (correct)
  • They were blueshifted
  • They disappeared

    • What provides distance cues in astronomy based on apparent size?

  • Apparent motion of planets
  • Apparent brightness of stars
  • Apparent size of a 'standard ruler' (correct)
  • Apparent color of galaxies

    • What is the significance of the redshift in light waves from receding galaxies?

    <p>Indicates the recession of galaxies</p> Signup and view all the answers

    What did Hubble's measurement of redshift in galaxies contribute to?

    <p>Understanding the expanding universe</p> Signup and view all the answers

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