Chapter 28 Test: Planets, Stars, And Galaxies

38 Questions  I  By Avarina101
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  • 1. 
    If a start is more massive, it is likely to have____.
    • A. 

      A longer life.

    • B. 

      A shorter life.

    • C. 

      No life.

    • D. 

      To live forever.


  • 2. 
    The Hertzsprung-Russell diagram plots the____.
    • A. 

      Absolute magnitude verses the apparent magnitude.

    • B. 

      Mass verses absolute magnitude.

    • C. 

      Luminosity verses surface temperature.

    • D. 

      Surface temperature verses mass.


  • 3. 
    The band on the Hertzprung- Russell diagram that runs from the upper left (high luminosity, high surface temperature) to the lower right (low luminosity, low surface temperature) is called____.
    • A. 

      Super Giants.

    • B. 

      White dwarfs.

    • C. 

      Common sequence.

    • D. 

      Main sequence.


  • 4. 
    Giant stars have diameters____.
    • A. 

      10 to 100 times greater then the suns.

    • B. 

      100 to 150 times greater than the sun.

    • C. 

      10 to 100 million times greater than the sun.

    • D. 

      100 to 150 million times greater than the sun.


  • 5. 
    Super Giants are_____.
    • A. 

      Very dim.

    • B. 

      Always 500 times greater than our sun.

    • C. 

      Relatively cool in temperature.

    • D. 

      None of the above.


  • 6. 
    Stars that are nearing the end of their life and were once red giants are called______.
    • A. 

      Red dwarfs.

    • B. 

      Dead stars.

    • C. 

      Purple Trolls.

    • D. 

      White dwarfs.


  • 7. 
    A star begins its life in a cloud of gas and dust. The cloud is called a ____.
    • A. 

      Nebula.

    • B. 

      Neutron.

    • C. 

      Galaxy.

    • D. 

      Pulsar.


  • 8. 
    Glowing areas in the birth place of a star are called____.
    • A. 

      Pulsars.

    • B. 

      Nebulas.

    • C. 

      Protostars.

    • D. 

      Orions.


  • 9. 
    When a large star explodes as a supernova, most of the time it creates____.
    • A. 

      Other little stars.

    • B. 

      Comets.

    • C. 

      Elements such as lead, copper, uranium and many more.

    • D. 

      Nebulas.


  • 10. 
    The result of gases after a star explodes is called a ____.
    • A. 

      Planetary nebula.

    • B. 

      Supernova.

    • C. 

      Gaseous core.

    • D. 

      Shock wave.


  • 11. 
    What is the most abundant gas in the solar system?
    • A. 

      Helium.

    • B. 

      Iron.

    • C. 

      Dust.

    • D. 

      Hydrogen


  • 12. 
    When a star like the sun begins to die, its core temperature ______.
    • A. 

      Increases.

    • B. 

      Stays the same.

    • C. 

      Decreases.

    • D. 

      None of the above.


  • 13. 
    The remains of a star after a supernova is ____.
    • A. 

      A quasar or a cloud.

    • B. 

      A neutron star or blackhole.

    • C. 

      A white dwarf or blue giant.

    • D. 

      A black hole or white dwarf.


  • 14. 
    A pulsar is a ____.
    • A. 

      Dead star.

    • B. 

      A new-born star.

    • C. 

      A rapidly spinning neutron star.

    • D. 

      A rapidly spinning white dwarf.


  • 15. 
    A black hole is ____.
    • A. 

      All of the below.

    • B. 

      The densest object in the universe.

    • C. 

      A very strong gravitational force.

    • D. 

      The remnants of a star at least 15 times as massive as the sun.


  • 16. 
    What is apparent magnitude?
    • A. 

      The measure of how bright a star appears to be to an observer on Earth.

    • B. 

      A measure of how bright the star would be if all stars were at the same distance from Earth.

    • C. 

      The brightness of a star.

    • D. 

      How far away the star is from Earth.


  • 17. 
    The Earth turns from___.
    • A. 

      South to North.

    • B. 

      West to East.

    • C. 

      East to West.

    • D. 

      North to south.


  • 18. 
    How far away is an Astronomical Unit from Earth to the Sun?
    • A. 

      11 inches.

    • B. 

      151, 000 km.

    • C. 

      13 million km.

    • D. 

      150 million km.


  • 19. 
    The sun's apparent magnitude is ____.
    • A. 

      300.

    • B. 

      -26.7.

    • C. 

      2.5.

    • D. 

      -1.45


  • 20. 
    The Big Dipper is part of the constellation____.
    • A. 

      Polaris.

    • B. 

      Ursa Minor.

    • C. 

      North Star.

    • D. 

      Ursa Major.


  • 21. 
    The hottest star has a ____ color.
    • A. 

      Yellow.

    • B. 

      Blueish White.

    • C. 

      Green.

    • D. 

      Red.


  • 22. 
    If two stars have the same size temperature and are the same distance from Earth, the ____ star would be more luminous.
    • A. 

      Bigger.

    • B. 

      Smaller.

    • C. 

      Imaginary.

    • D. 

      Blue.


  • 23. 
    Stars that change in brightness as they expand and contract are called____.
    • A. 

      White dwarfs.

    • B. 

      Pulsating stars.

    • C. 

      Steady stars.

    • D. 

      Red giant stars.


  • 24. 
    The sun is about____% hydrogen.
    • A. 

      69%.

    • B. 

      37%.

    • C. 

      93%.

    • D. 

      27%.


  • 25. 
    The lower the stars magnitude number, the ____ the star is.
    • A. 

      Brighter.

    • B. 

      Lower.

    • C. 

      Darker.

    • D. 

      Higher.


  • 26. 
    The temperature of the Universe is gradually____.
    • A. 

      Increasing.

    • B. 

      Staying the same.

    • C. 

      Decreasing.

    • D. 

      Dissapearing.


  • 27. 
    How many light years is the sun from the Milky Way's center?
    • A. 

      26,000 Light Years.

    • B. 

      42,000 Light Years.

    • C. 

      16,000 Light Years.

    • D. 

      18,000 Light Years.


  • 28. 
    What is a galaxy?
    • A. 

      The earth's orbit.

    • B. 

      A single star.

    • C. 

      The surface of the Moon.

    • D. 

      A group of stars held together by gravity.


  • 29. 
    A _______ _____ is the full range of wavelengths of electromagnetic radiation.
    • A. 

      Electromagnetic spectrum.

    • B. 

      Emission spectrum.

    • C. 

      Absorption spectrum.

    • D. 

      Black hole.


  • 30. 
    A ____ _______ is a star with more than 100 times the mass of our sun.
    • A. 

      Giant.

    • B. 

      Supernova.

    • C. 

      Super giant.

    • D. 

      Red dwarf.


  • 31. 
    An _____ _______ shows the wavelengths of visible light that a glowing gas emits.
    • A. 

      Emission spectrum.

    • B. 

      Absorption spectrum.

    • C. 

      White dwarf.

    • D. 

      Rainbow.


  • 32. 
    What is a neutron star?
    • A. 

      The super dense mass of the sun.

    • B. 

      The super dense mass of neutrons that can result after the collapse of a massive star.

    • C. 

      The moon's neutron balance between gravity and the surrounding stars.

    • D. 

      A star with neutron friends.


  • 33. 
    A _____ _______ is the final stage of an extremely large star, with a gravitational field so intense that not even light can escape.
    • A. 

      Earth's core.

    • B. 

      The sun.

    • C. 

      Neutron star.

    • D. 

      Black hole.


  • 34. 
    The Big Bang model states that _____.
    • A. 

      God created everything.

    • B. 

      Debris magically appeared from another galaxy to form the Milky Way.

    • C. 

      That million's of stars collided and sent debris every were.

    • D. 

      There was a great expansion from a small dense object.


  • 35. 
    A very distant, extremely luminous celestial object that scientists consider to be a type of active galactic nuclei is a ___________.

  • 36. 
    __________ _______ are yellow supergiants whose cycles of brightness range from 1-50 days, but mostly 5 days.

  • 37. 
    ________ is a neutron star that is spinning very rapidly.

  • 38. 
    A_____ ____ is a burst of light that results from the sudden collapse of an iron core of a massive star.

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