GEOL 109 EXAM 1 QUIZES 4-6 QUESTIONS & ANSWERS
1. In general, large planets cool
A. during core formation
B. before a lithosphere can form
C. more rapidly than small planets of similiar composition
D. more slowly than small planets of similar composition: D
2. Important sources of planetary heat include all the following except
A. accretion
B. core formation
C. tidal heating
D. decay of radioactive elements
E. the Big Bang: E
3. Which of the following is not a mechanism of heat transport?
A. conduction
B. magnetism
C. convection
D. radiation: B
4. The weak layer within a terrestrial planet which behaves like a viscous (resist-
ing flow) fluid is
A. the crust
B. the lithosphere
C. the asthenosphere
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, D. the mantle: C
5. Consider two planets that are the same age. Which one will have the thicker
lithosphere?
A. A large rocky planet
B. A large gas giant
C. A small rocky planet
D. A small gas giant: C
6. Why are the rocks found at the surface of a planet, say Mercury, so
different in elemental composition from the meteoritic material from which it
formed?
A. The planet differentiated after accretion.
B. Layers of different composition sequentially accreted to the planet.
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1. In general, large planets cool
A. during core formation
B. before a lithosphere can form
C. more rapidly than small planets of similiar composition
D. more slowly than small planets of similar composition: D
2. Important sources of planetary heat include all the following except
A. accretion
B. core formation
C. tidal heating
D. decay of radioactive elements
E. the Big Bang: E
3. Which of the following is not a mechanism of heat transport?
A. conduction
B. magnetism
C. convection
D. radiation: B
4. The weak layer within a terrestrial planet which behaves like a viscous (resist-
ing flow) fluid is
A. the crust
B. the lithosphere
C. the asthenosphere
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10
, D. the mantle: C
5. Consider two planets that are the same age. Which one will have the thicker
lithosphere?
A. A large rocky planet
B. A large gas giant
C. A small rocky planet
D. A small gas giant: C
6. Why are the rocks found at the surface of a planet, say Mercury, so
different in elemental composition from the meteoritic material from which it
formed?
A. The planet differentiated after accretion.
B. Layers of different composition sequentially accreted to the planet.
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