GLG130F

Second Term Test (Makeup)

Nov 1996

Read all questions carefully. Each multiple choice question is worth one point: choose the best answer. If you have not already done so, write your name and student number onto the exam now.

  1. The atmosphere of Mars is:
    1. Primarily carbon dioxide (CO2).
    2. Similar to that of Earth
    3. Similar to that of the giant planets
    4. none of the above
  2. The Moon is:
    1. in a 1:1 spin-orbit resonance
    2. in a 1:1 orbit-orbit resonance
    3. in a 3:2 spin-orbit resonance
    4. not in a resonance
  3. Craters on the Moon are:
    1. Most commonly volcanic in origin
    2. Most common in the maria or lowlands
    3. Mostly due to impacts
    4. none of the above
  4. Craters on Mercury generally:
    1. Deeper than those with similar diameters on the Moon
    2. Shallower than those with similar diameters on the Moon
    3. About the same depth as those with similar diameters on the Moon
  5. The northern hemisphere of Mars:
    1. has a crater density similar to that of the southern hemisphere
    2. has a crater density higher than that of the southern hemisphere
    3. has a crater density lower than that of the southern hemisphere
    4. Is dominated by impact craters
  6. Mars is about the same size as Mercury, but has been much more active geologically. This is probably because
    1. Mars has an atmosphere, whereas Mercury does not
    2. Mars has a smaller area/mass ratio than Mercury, so it cooled more slowly
    3. Mars formed further from the sun, so it incorporates more volatile (lower melting point) material than Mercury
    4. Mars is more dense than Mercury
  7. The surface of Venus is
    1. Older than the surface of the moon
    2. About the same age as the surface of the moon
    3. Younger than the surface of the moon
  8. The main path for heat loss from Venus is
    1. Mantle (plume) convection and lithospheric subduction
    2. Mantle (plume) convection and conduction
    3. Conduction
    4. none of the above

Part 2

[6] 1. Name and describe briefly the three stages of crater formation.

[2] 2. Give three pieces of evidence that volcanic activity has occurred on the moon.

[2] 3. Is the core of Mercury, as a fraction of the total size of the planet, larger, about the same size, or smaller, than the cores of the other terrestrial planets? What is the evidence?

[3] 4. Which planet has a ``global escarpment''? What is the main difference between the two types of terrain on either side of the escarpment?

[2] 5. Why is the surface of Venus so much hotter than that of Earth, and even Mercury

Part 3

Mark the location of the following features on the picture below:

  1. Younger terrain.
  2. Older terrain.
  3. An example of a young crater.
  4. An example of an old crater

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