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5 Written questions

5 Matching questions

  1. The coolest stars burn ________, while the hottest stars burn ________.
  2. What does redshift tell scientists about the universe?
  3. In a star's main sequence the element _____________ is being fused into the element _____________.
  4. Mysterious matter that doesn't emit light is called ______________________.
  5. The larger a star is, the ____________ its main sequence will be.
  1. a red; (yellow, white); blue
  2. b dark matter
  3. c shorter
  4. d hydrogen, helium
  5. e the universe is expanding

5 Multiple choice questions

  1. The Big Bang Theory
  2. Hubble's Law
  3. nebulae
  4. iron
  5. black hole

5 True/False questions

  1. A star enters its red giant stage when it begins fusing which element?the universe is expanding


  2. What shape is the Milky Way galaxy?spiral


  3. From birth to death, our sun is expected to spend a total of __________________ years in its main sequence, before running out of Hydrogen fuelnebulae


  4. What conditions are necessary for nuclear fusion to occur?extreme heat and pressure


  5. Approximately how old is the universe?13.7 billion years