Stages of Star Evolution: From Magnesium to Iron
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Questions and Answers

What celestial object is formed when a protostar runs out of material before achieving nuclear fusion?

  • Planet
  • Supernova
  • White dwarf
  • Brown dwarf (correct)
  • Which event led to the formation of the Crab Nebula?

  • Protostar collapse
  • Supernova (correct)
  • Nuclear fusion
  • White dwarf formation
  • What is the role of protostars in star formation?

  • First step in forming a star (correct)
  • Creating black holes
  • Triggering supernovae
  • Forming planetary nebulae
  • What do celestial objects called 'protostars' lack in their cores?

    <p>Nuclear fusion</p> Signup and view all the answers

    What happens if a protostar cannot create nuclear fusion at its core?

    <p>Becomes a brown dwarf</p> Signup and view all the answers

    What is the status of gas in a protostar undergoing gravitational compression?

    <p>Collapsing into a sphere</p> Signup and view all the answers

    Which type of celestial object is between a planet and a star?

    <p>Brown dwarf</p> Signup and view all the answers

    What will result if a protostar can successfully create nuclear fusion?

    <p>New star formation</p> Signup and view all the answers

    What is the significance of protostars in stellar evolution?

    <p>They mark the beginning of star formation</p> Signup and view all the answers

    What happens if the protostar can't become large enough to achieve nuclear fusion?

    <p>It becomes a brown dwarf.</p> Signup and view all the answers

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