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Life Cycle of a Star

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  • A star begins its life as a large cloud of gas and dust called a:
    Crater
    Comet
    Galaxy
    Nebula
  • How long can a star in the Main Sequence phase stay stable?
    1000 years
    Millions of years
    100 years
    Billions of years
  • Which object has gravity so strong that not even light can escape?
    Asteroid
    Planet
    Black Hole
    Comet
  • What do we call the explosion of a star?
    Kaboom
    Red Giant
    Supernova
    Planetary Nebula
  • The Sun is currently in which stage of its life?
    Main Sequence
    Protostar
    Red Giant
    Black Dwarf
  • The hot core of the star cools and becomes a:
    Red Dwarf
    Red Giant
    Planetary Nebula
    White Dwarf
  • What is the first stage in a star's life?
    Protostar
  • Which of these is NOT part of a star’s life cycle?
    Nebula
    Microwave
    Red Giant
    Main Sequence
  • A very massive star becomes a black hole after:
    It freezes
    It has a supernova explosion
    It collides with the Sun
    It turns into a planet.
  • What do we call the biggest stars in the Universe?
    Supernovas
    Red Supergiants
    Red Giants
    White Supergiants
  • The Sun is a:
    Planet
    Comet
    Star
    Moon
  • What causes a star to shine?
    The moon reflecting light.
    Fire from volcanoes
    Nuclear reactions inside the star
    Burning coal.
  • The life cycle of a star depends on its:
    Location
    Something Else
    Materials
    Size
  • TRUE OR FALSE: Red Dwarf stars are bigger than the sun.
    FALSE.
  • How is a protostar formed?
    When gas in space is pulled together by gravity to form a cloud.
  • What do we call the cloud of dust that forms when the outer parts of a star drift away?
    Red Dwarf
    Planetary Nebula
    Cosmic Dust Cloud
    Supernova
  • What causes a star to explode?
    A star explodes either when it gains too much matter, or when it runs out of nuclear 'fuel'.
  • When a star is in the “main sequence” stage, it is:
    Exploding
    Very new and still forming
    Stable and burning hydrogen
    Turning into a Planet
  • What do we call stars smaller than the Sun which burn fuel more slowly and exist at cooler temperatures?
    Red Giant
    Supernova
    Planetary Nebula
    Red Dwarf
  • A protostar is:
    A type of planet.
    A star that has exploded.
    A star that has turned blue.
    A star that has just started to form.
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