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The expanding universe and the Big Bang

11th grade (Year 12 in England) · 16 questions · Common Core: NGSS.HS-ESS1-2 · England: KS4 Physics: Space physics (separate science)

Name

Date

Score/ 16

  1. Question 1

    A spectral line normally at 400 nm is observed at 404 nm in light from a galaxy. By how many nanometres has it been red-shifted?

    Answernm

  2. Question 2

    More distant galaxies show greater red-shift. What does this suggest?

    • A. Light slows down over time
    • B. The universe is expanding
    • C. The universe is shrinking
    • D. Galaxies are standing still

  3. Question 3

    The Big Bang: which statement is true?

    • A. Red-shift means galaxies are moving towards us.
    • B. Galaxies further away are generally moving away faster.
    • C. The Big Bang was an explosion at one point in an existing empty space.
    • D. The Earth is the centre of the universe.

  4. Question 4

    A spectral line normally at 600 nm is observed at 660 nm in light from a galaxy. By how many nanometres has it been red-shifted?

    Answernm

  5. Question 5

    What is red-shift?

    • A. light becoming bluer
    • B. the Sun setting
    • C. light from distant galaxies is stretched to longer wavelengths
    • D. galaxies turning red because they are hot

  6. Question 6

    The Big Bang: which statement is true?

    • A. Galaxies further away are generally moving away faster.
    • B. Red-shift means galaxies are moving towards us.
    • C. The Earth is the centre of the universe.
    • D. The Big Bang was an explosion at one point in an existing empty space.

  7. Question 7

    A spectral line normally at 400 nm is observed at 420 nm in light from a galaxy. By how many nanometres has it been red-shifted?

    Answernm

  8. Question 8

    What is the cosmic microwave background radiation (CMB)?

    • A. leftover radiation from the early universe, seen in every direction
    • B. heat from the Sun
    • C. light from the Moon
    • D. signals from mobile phones

  9. Question 9

    The Big Bang: which statement is true?

    • A. The Big Bang was an explosion at one point in an existing empty space.
    • B. The Earth is the centre of the universe.
    • C. Red-shift means galaxies are moving towards us.
    • D. The universe is about 13.8 billion years old.

  10. Question 10

    A spectral line normally at 656 nm is observed at 662.56 nm in light from a galaxy. By how many nanometres has it been red-shifted?

    Answernm

  11. Question 11

    What is the cosmic microwave background radiation (CMB)?

    • A. leftover radiation from the early universe, seen in every direction
    • B. signals from mobile phones
    • C. light from the Moon
    • D. heat from the Sun

  12. Question 12

    The Big Bang: which statement is true?

    • A. The cosmic microwave background is evidence for the Big Bang.
    • B. Red-shift means galaxies are moving towards us.
    • C. The Earth is the centre of the universe.
    • D. The Big Bang was an explosion at one point in an existing empty space.

  13. Question 13

    A spectral line normally at 500 nm is observed at 525 nm in light from a galaxy. By how many nanometres has it been red-shifted?

    Answernm

  14. Question 14

    About how old is the universe?

    • A. about 6000 years
    • B. about 13.8 billion years
    • C. it has always existed
    • D. about 4.6 billion years

  15. Question 15

    The Big Bang: which statement is true?

    • A. The Big Bang was an explosion at one point in an existing empty space.
    • B. The Earth is the centre of the universe.
    • C. Red-shift means galaxies are moving towards us.
    • D. Galaxies further away are generally moving away faster.

  16. Question 16

    A spectral line normally at 656 nm is observed at 669.12 nm in light from a galaxy. By how many nanometres has it been red-shifted?

    Answernm

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Answer key: The expanding universe and the Big Bang

  1. 1. 4 nm

  2. 2. B. The universe is expanding

  3. 3. B. Galaxies further away are generally moving away faster.

  4. 4. 60 nm

  5. 5. C. light from distant galaxies is stretched to longer wavelengths

  6. 6. A. Galaxies further away are generally moving away faster.

  7. 7. 20 nm

  8. 8. A. leftover radiation from the early universe, seen in every direction

  9. 9. D. The universe is about 13.8 billion years old.

  10. 10. 6.56 nm

  11. 11. A. leftover radiation from the early universe, seen in every direction

  12. 12. A. The cosmic microwave background is evidence for the Big Bang.

  13. 13. 25 nm

  14. 14. B. about 13.8 billion years

  15. 15. D. Galaxies further away are generally moving away faster.

  16. 16. 13.12 nm