Env Sci/Physics 141: Small Bodies Of The Solar System

Steven Dutch, Natural and Applied Sciences, University of Wisconsin - Green Bay
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  1. The role of impact in Solar System history:
    1. was most important early on.
    2. has been increasing over time.
    3. has been constant.
    4. has been gradually decreasing.
  2. The principal clue that the surface of a planet is geologically young
    1. Atmosphere
    2. Heavy cratering
    3. Volcanoes
    4. Lack of craters
  3. The 1908 Tunguska Event is now believed to have been caused by what?
    1. A rocky asteroid or meteor
    2. A comet
    3. A piece of anti-matter
    4. A mini-black hole
  4. When a meteor hits, the resulting crater is ______ the size of the meteor:
    1. less than
    2. about equal to
    3. five times
    4. 20-30 times
  5. The energy of a moving body is related to its:
    1. Diameter
    2. Mass and Speed
    3. Speed
    4. Diameter and Composition
  6. Comets are mostly made of:
    1. Frozen gases
    2. Rock
    3. Dust
    4. Rock and metal
  7. Comets’ Orbits:
    1. Are usually pretty circular
    2. Do not obey Kepler’s Laws
    3. Always get smaller with time
    4. Are usually very elongated ellipses
  8. What bodies in the solar system orbit between Mars and Jupiter?
    1. comets
    2. astroblemes
    3. meteoroids
    4. Kuiper Belt objects
    5. asteroids or minor planets
  9. What bodies in the solar system orbit beyond Neptune?
    1. comets
    2. astroblemes
    3. meteoroids
    4. Kuiper Belt objects
    5. asteroids
  10. Comets exhibit a tail because:
    1. friction wears them away.
    2. they begin to evaporate when they get close to the Sun.
    3. The tail is always there but sunlight makes the tail visible.
    4. centrifugal force flings material off the comet.
  11. Which of the following events did all of the terrestrial planets experience early in their history?
    1. accretion
    2. meteorite impacting
    3. differentiation
    4. all of these
    5. volcanism
  12. How big is the largest minor planet?
    1. Size of Mars
    2. About 1000 km in diameter
    3. About 100 km in diameter
    4. About 10 km in diameter
    5. About 1 km in diameter
  13. Meteor showers occur when:
    1. The earth intersects an orbiting swarm of debris
    2. An asteroid blows up
    3. A comet collides with Earth
    4. An impact on the Moon spews debris at the Earth
  14. A tektite is:
    1. A blob of glass created by impact on the earth
    2. A piece of nickel-iron alloy that fell to earth
    3. Possibly the most primitive material left from the formation of the Solar System
    4. A piece of basalt knocked off another planet by impact
  15. Which is not characteristic of tektites?
    1. Glassy
    2. Metallic
    3. Often have streamlined forms
    4. Associated with impact sites
  16. A chondrite is:
    1. A blob of glass created by impact on the earth
    2. A piece of nickel-iron alloy that fell to earth
    3. Possibly the most primitive material left from the formation of the Solar System
    4. A piece of basalt knocked off another planet by impact
  17. An achondrite is:
    1. A blob of glass created by impact on the earth
    2. A piece of nickel-iron alloy that fell to earth
    3. Possibly the most primitive material left from the formation of the Solar System
    4. A piece of basalt knocked off another planet by impact
  18. Apart from magnetism, the way to identify an iron meteorite is:
    1. They never rust
    2. They have crystal-lined cavities
    3. They flatten around objects on impact
    4. Etching them with acid reveals a distinctive texture
  19. The rarest class of meteorite:
    1. Nickel-iron
    2. Stony
    3. Stony-Iron
    4. Tektite
  20. The most abundant class of meteorite:
    1. Nickel-iron
    2. Stony
    3. Stony-Iron
    4. Tektite

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Last Update 25 September 2008; Last Update 14 December 2009

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