Science

6th

grade

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The Expanding Universe

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22 questions

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  • 1. Multiple Choice
    15 minutes
    1 pt

    Which is one piece of information that astronomers use to calculate the age of the universe?

    dark energy

    the age of rocks on Earth

    the current motion of inner planets

    patterns of background radiation

  • 2. Multiple Choice
    1 minute
    1 pt

    Which is one of Edwin Hubble’s findings that supports the big bang theory?

    The universe started at a central point.

    Planetesimals formed in debris disks.

    Visible matter only makes up about 5% of the universe.

    The Milky Way is the only galaxy in the universe.

  • 3. Multiple Choice
    1 minute
    1 pt

    Which statement accurately describes the Doppler effect?

    It was used by Hubble to measure velocities of galaxies.

    It indicates galaxy motion through changes in sound waves.

    It indicates a galaxy moving toward Earth through red shift.

    It indicates a galaxy moving away from Earth through blue shift

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