Astronomy Practice

12 Questions  I  By Mrandrewphillips
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 Astronomy Practice
Practice for the unit exam on Astronomy

  
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Questions and Answers

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  • 1. 
    Why are certain telescopes in space?
    • A. 

      It is cheaper to put them in space

    • B. 

      You can only see visible light from space

    • C. 

      The atmosphere blocks certain EM waves

    • D. 

      They are closer to what they are studying


  • 2. 
    What two things are required for nuclear fusion?
    • A. 

      Hydrogen and helium

    • B. 

      High heat and force

    • C. 

      Uranium and plutonium

    • D. 

      Pressure and water


  • 3. 
    What two steller objects come after a red giant in the life cycle of stars?
    • A. 

      Planetary nebula and white dwarf

    • B. 

      Supernova and neutron star

    • C. 

      Neutron star and black hole

    • D. 

      Supergiant star and neutron star


  • 4. 
    What two stellar objects can arise from a supernova?
    • A. 

      White dwarf and black dwarf

    • B. 

      Neutron star and black hole

    • C. 

      Red giant and red supergiant

    • D. 

      black hole and black dwarf


  • 5. 

    In the equation , what does the E stand for?
    • A. 

      Mass

    • B. 

      Speed of light

    • C. 

      Energy

    • D. 

      Wavelength


  • 6. 
    When does a star leave the main sequence?
    • A. 

      When it runs out of helium to fuse

    • B. 

      When it turns into a black dwarf

    • C. 

      When it turns into a planetary nebula

    • D. 

      When it runs out of hydrogen to fuse


  • 7. 
    What color are the hottest stars?
    • A. 

      Red

    • B. 

      White

    • C. 

      Blue

    • D. 

      Yellow


  • 8. 
    What competing forces keep main sequence stars at equilibrium?
    • A. 

      Gravity and pressure from nuclear fusion

    • B. 

      Gravity and mass

    • C. 

      Stars are unstable and not at equilibrium

    • D. 

      Nuclear fusion and magnetism


  • 9. 
    What two things are needed to start nuclear fusion?
    • A. 

      High heat and low pressure

    • B. 

      High heat and high pressure

    • C. 

      Hydrogen and helium

    • D. 

      Uranium and plutonium


  • 10. 
    What does being close to the sun mean to the inner planets?
    • A. 

      It makes them bigger than the other planets

    • B. 

      It makes them orbit in the same direction

    • C. 

      It made them consist primarily of rock

    • D. 

      It means they will all spiral into the sun in 2 million years


  • 11. 
    What is a redshift?
    • A. 

      Means an object is moving away from us

    • B. 

      Means the objects light has had its frequency lowered

    • C. 

      It is evidence for an expanding universe

    • D. 

      All of the above


  • 12. 
    What evidence do we have of the inflation right after the Big Bang?
    • A. 

      The sun's existence

    • B. 

      Cosmic background radiation

    • C. 

      Life on this planet

    • D. 

      Most objects in the universe are coming towards us


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