Astronomy Final Test 2

36 Questions | Total Attempts: 33

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Astronomy Quizzes & Trivia

Questions and Answers
  • 1. 
    Which of the following objects in NOT rotating around its own axis?
    • A. 

      Earth

    • B. 

      Mars

    • C. 

      Jupiter

    • D. 

      Uranaus

    • E. 

      None of the above (they all rotate around there own axes)

  • 2. 
    Why are all the large bodies in the Solar System round
    • A. 

      Rotation speeds pull the planetary material into a spherical shape

    • B. 

      The process of differentiation produces spherical shells of material

    • C. 

      Friction from the accretion process

    • D. 

      Gravity pulls the material into a spherical shape

    • E. 

      None of the above

  • 3. 
    According to our theory of solar system formation, why did Uranus and Neptune end up to be much less massive than Jupiter and Saturn?
    • A. 

      Particles in the solar nebula were more spread out at greater distances, so that accretion took longer and there was less time to pull in gas before the solar wind cleared the nebula

    • B. 

      The size differences are thought to be a random coincidence

    • C. 

      Ices were able to condense at the distance of Jupiter and Saturn, but only rock and metal could condense at the distances of Uranus and Neptune

    • D. 

      The colder gas in the outer regions of the solar nebula has less gravity and therefore could not gather up into such large balls

    • E. 

      None of the above

  • 4. 
    Which of the following observations, if made, could NOT be explained by the theory of solar system formation as discussed in class?
    • A. 

      A ninth planet similar in mass and size to Neptune is discovered to out past Pluto

    • B. 

      A ninth planet similar in ass and size to Earth is discovered between Jupiter and Saturn

    • C. 

      A new moon of Saturn is discovered that does not have a single impact carter on its surface

    • D. 

      One of the moons Jupiter is discovered to simply be a a large comet captured by Jupiter's gravity

    • E. 

      None of the above

  • 5. 
    When energy is transferred by the motion of hot material rising and cooler material sinking, it is called
    • A. 

      Conduction

    • B. 

      Radiation

    • C. 

      Fusion

    • D. 

      Convection

    • E. 

      None of the above

  • 6. 
    Which Jovian planet should have the most extreme seasonal changes
    • A. 

      Jupiter

    • B. 

      Saturn

    • C. 

      Uranus

    • D. 

      Neptune

  • 7. 
    What is significant about the motion of all the large bodies in the Solar System?
    • A. 

      They all generally rotate in the same direction

    • B. 

      Their motions appear to be totally random

    • C. 

      They revolve around the Sun in alternating directions

    • D. 

      They do not move at all

    • E. 

      None of the above

  • 8. 
    As the size of a terrestrial planet grows larger, the size of its lithosphere 
    • A. 

      Grows smaller at a percentage-wise basis

    • B. 

      Grows larger on a percentage-wise basis

    • C. 

      Is constant

    • D. 

      Becomes a majority of the planet's interior

    • E. 

      None of the above

  • 9. 
    How do the size and mass of Jupiter's core compare to Earth?
    • A. 

      It is about 10 times larger in size and the same mass

    • B. 

      It is the same size and mass

    • C. 

      It is about the same size but 10 times more massive

    • D. 

      It is about 10 times larger in size and mass

    • E. 

      None of the above

  • 10. 
    The following statements are all true. Which one counts as an "exception to the rule" in ebing unusual for our Solar System?
    • A. 

      Jupiter has a very small axis tilt

    • B. 

      Saturn has no solid surface

    • C. 

      Venus does not have a moon

    • D. 

      The diameter of Earth's moon is one quarter the size or Earth

    • E. 

      All the above are exceptions

  • 11. 
    What causes the geological activity on Solar System objects?
    • A. 

      Impacts from leftover planetesimals

    • B. 

      Interior heat

    • C. 

      The objects' magnetic fields

    • D. 

      Gravitational interactions with the Sun

    • E. 

      None of the above

  • 12. 
    Why are there no impact craters on the surface of Io?
    • A. 

      It is too small to have been bombarded by planetesimals in the early Solar System

    • B. 

      Any craters have been eroded by the strong winds on Io's surface

    • C. 

      Jupiter's strong gravity attracted the planetesimals more strongly than Io and thus none landed on Io's surface

    • D. 

      Io did have craters but they have all been buried in lava flows

    • E. 

      Io's thick atmosphere obscures the view of the craters

  • 13. 
    According to our basic scenario of solar system formation, why do the Jovian planets have numerous large moons?
    • A. 

      The large moons of the jovian planets originally formed in the inner solar system and these moons then migrated out to join up

    • B. 

      As the growing jovian planets captured gas from the solar nebula, the gas formed swirling disks around them, and the moons formed from condensation accretion within these disks.

    • C. 

      Because of their strong gravity, the jovian planets were able to capture numerous asteroids that happened to be passing nearby, and these became the major moons of the jovian planets

    • D. 

      The many moons of the jovian planets remains one of the unexplained mysteries of the formation of our solar system

  • 14. 
    Which of the following is NOT necessary for a planet to generate a magnetic field?
    • A. 

      An electrically conducting core

    • B. 

      Convection in the interior

    • C. 

      A completely solid core

    • D. 

      Rotation of the core

    • E. 

      None of the above (they are all required)

  • 15. 
    Which of the following is NOT a general characteristic of the Jovian planets?
    • A. 

      They are much more massive than the terrestrial planets

    • B. 

      They lack solid surfaces

    • C. 

      They are lower in average density than the terrestrial planets

    • D. 

      They are composed mainly of hydrogen, helium, and hydrogen compounds

    • E. 

      None of the above (they are all general characteristics of the Jovian planets)

  • 16. 
    Which processes is used to determine the age of the Solar System?
    • A. 

      Radiometric dating

    • B. 

      Measuring the depth of impact craters

    • C. 

      Counting the rings in meteorites

    • D. 

      Astronomers use the time scale given by the current theory of solar system formation

    • E. 

      None of the above

  • 17. 
    Planetary surfaces changes caused by wind, water, or ice are called?
    • A. 

      Convection

    • B. 

      Differentiation

    • C. 

      Conduction

    • D. 

      Tectonics

    • E. 

      Erosion

  • 18. 
    What atmospheric constituent is responsible for the blue color of Uranus and Neptune?
    • A. 

      Ammonia

    • B. 

      Methane

    • C. 

      Water

    • D. 

      Hydrogen

    • E. 

      None of the above

  • 19. 
    Based on everything we've discussed about solar system formation, which of the following statements is probably NOT true?
    • A. 

      Only a tiny percentage of stars are surrounded by spinning disks of gas during their formation

    • B. 

      Other planetary systems will have far more numerous asteroids and comets than actual planets

    • C. 

      Other solar systems will also have planets in the two basic categories

    • D. 

      Planets always tend to orbit their star in the same direction and approximately the same plane

    • E. 

      None of the above (they are all probably true)

  • 20. 
    The greenhouse effect occurs because Earth's atmosphere is transparent to 
    • A. 

      X-rays

    • B. 

      Ultraviolet light

    • C. 

      Visible light

    • D. 

      Infarared light

    • E. 

      All of the above

  • 21. 
    Why does Jupiter have three distinct layers of clouds?
    • A. 

      Clouds for randomly, so on average there are always three layers

    • B. 

      The three layers reflect regions of Jupiter's atmosphere with different chemical compositions

    • C. 

      Jupiter has three different types of wind, each of which makes a different type of cloud

    • D. 

      The three layers represent clouds made of gases that condense at different temperatures

    • E. 

      None of the above

  • 22. 
    Which of the following is NOT a characteristic of the inner planets?
    • A. 

      Their orbits are relatively closely spaced

    • B. 

      They are relatively smaller than outer planets

    • C. 

      They all have deep, substantial atmospheres

    • D. 

      They have very few, if any, moons

    • E. 

      They all have solid, rocky surfaces

  • 23. 
    Even thought Venus is essentially the same size as Earth, its surface conditions are vastly different due to
    • A. 

      Venus' stronger magnetic field

    • B. 

      A runway greenhouse effect

    • C. 

      Extensive liquid water on the surface

    • D. 

      Tidal heating

    • E. 

      All of the above

  • 24. 
    What is the Great Red Spot?
    • A. 

      A place where reddish particles from Io impact Jupiter's surfaces

    • B. 

      A long-lived hurricane-like storm on Jupiter

    • C. 

      A visual effect that comes and goes as the magnetic field on Jupiter varies

    • D. 

      A region on Jupiter where the temperature is so high that the gas glows with red visible light

    • E. 

      None of the above

  • 25. 
    The similarities seen in the chemical compositions of the Sun and planets mean that
    • A. 

      The Sun if formed first and ejected all planetary material

    • B. 

      The Sun and planets are formed from a single, common source

    • C. 

      The planets and Sun were physically connected together at one point

    • D. 

      The planets and Sun all formed extremely close to one another

    • E. 

      All of the above

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