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Astronomy Chapter Ten

11 Questions
Astronomy Quizzes & Trivia
Questions and Answers
  • 1. 
    The phase of matter in the Sun is
    • A. 

      Gas.

    • B. 

      Plasma.

    • C. 

      Liquid.

    • D. 

      Solid.

    • E. 

      A mixture of all of the above

  • 2. 
    Which is closest to the temperature of the core of the Sun?
    • A. 

      10,000 K

    • B. 

      100,000 K

    • C. 

      1 million K

    • D. 

      10 million K

    • E. 

      100 million K

  • 3. 
    The core of the Sun is
    • A. 

      At the same temperature and density as the surface.

    • B. 

      At the same temperature but denser than the surface.

    • C. 

      Hotter and denser than the surface.

    • D. 

      Constantly rising to the surface through convection.

    • E. 

      Composed of iron.

  • 4. 
    How does the Sun generate energy today?
    • A. 

      Nuclear fission

    • B. 

      Nuclear fusion

    • C. 

      Chemical reactions

    • D. 

      Gravitational contraction

    • E. 

      Gradually expanding in size

  • 5. 
    How do human-built nuclear power plants on Earth generate energy?
    • A. 

      Chemical reactions

    • B. 

      Nuclear fusion

    • C. 

      Nuclear fission

    • D. 

      Converting kinetic energy into electricity

    • E. 

      Converting gravitational potential energy into electricity

  • 6. 
    At the center of the Sun, fusion converts hydrogen into
    • A. 

      Hydrogen compounds.

    • B. 

      Plasma.

    • C. 

      Radiation and elements like carbon and nitrogen.

    • D. 

      Radioactive elements like uranium and plutonium.

    • E. 

      Helium, energy, and neutrinos.

  • 7. 
    How much mass does the Sun lose through nuclear fusion per second?
    • A. 

      4 tons

    • B. 

      4 million tons

    • C. 

      600 tons

    • D. 

      600 million tons

    • E. 

      Nothing: mass-energy is conserved.

  • 8. 
    Suppose you put two protons near each other. Because of the electromagnetic force, the two protons will
    • A. 

      Collide.

    • B. 

      Remain stationary.

    • C. 

      Attract each other.

    • D. 

      Repel each other.

    • E. 

      Join together to form a nucleus.

  • 9. 
    The light radiated from the Sun's surface reaches Earth in about 8 minutes, but the energy of that light was released by fusion in the solar core about
    • A. 

      Several years ago.

    • B. 

      Tens of years ago.

    • C. 

      About a hundred years ago.

    • D. 

      About a thousand years ago.

    • E. 

      A million years ago.

  • 10. 
    What processes are involved in the sunspot cycle?
    • A. 

      Gravitational contraction of the Sun

    • B. 

      Wave motions in the solar interior

    • C. 

      Variations of the solar thermostat

    • D. 

      The winding of magnetic field lines due to variations in the Sun's rotation

  • 11. 
    What observations characterize solar maximum?
    • A. 

      The Sun becomes much brighter.

    • B. 

      The Sun emits light of longer average wavelength.

    • C. 

      The Sun rotates faster at the equator.

    • D. 

      We see many sunspots on the surface of the Sun.

    • E. 

      All of the above