BYU GEOL 109 Exam 2
Study online at https://quizlet.com/_8unnlh
1. Would you be surprised if tomorrow's newspaper re- A) Yes, that is not expected
ported that a volcano was discovered erupting on Mer- to happen on Mercury to-
cury? day.
A) Yes, that is not expected to happen on Mercury
today.
B) No, Mercury is so hot because it is near the Sun that
this would be expected.
C) No, Mercury has such a large iron core that it has
cooled very slowly and could still have volcanoes erupt
on its surface.
D) No, the tidal heating from the nearby Sun keeps it
volcanically active.
2. What causes the differences betweenimpact craters B) Different gravitational
on the Moon and those on Mercury (the extent of the attractions on each planet
ejecta blanket and secondary cratering)?
A) Differences in the cratering rate
B) Different gravitational attractions on each planet
C) Crustal deformation
D) The size of the meteorites impacting Mercury
3. What do thermal models of Mercury's evolution sug- C) That it developed a
gest about its history? metallic core early in its
A) That it has developed a core in the last billion years history
or so.
B) That it experienced global expansion to produce
domical bulges.
C) That it developed a metallic core early in its history.
D) That its history is more like the Earth's than the
Moon's.
, BYU GEOL 109 Exam 2
Study online at https://quizlet.com/_8unnlh
4. The oldest types of terrains on both the Moon and B) Heavily cratered terrain
Mercury are ________________________.
A) Smooth, flood lava plains
B) Heavily cratered terrain
C) Folded mountain belts
D) Characterized by sinuous rilles and linear rilles
5. Which of the following features are found on the Moon A, C, D, and E
and Mercury? (Check all that apply)
A) Flood lavas
B) Dunes
C) Multiring basins
D) Impact craters
E) Faults related to contraction
6. Which image shows a feature that formed by contrac- B
tion of Mercury's surface? Contraction produces lo-
bate features, while exten-
A sion produces linear val-
B leys.
7. Which of the following tectonic processes are thought A and D
to have occurred on Mercury? (Check all that apply)
A) Thrust faulting due to contraction of the planet
B) Thrust faulting due to expansion of the planet as it
heated
C) Graben formation due to contraction
D) Graben formation due to extension
, BYU GEOL 109 Exam 2
Study online at https://quizlet.com/_8unnlh
8. Mercury's smooth plains ____________________. A) May be similar in origin
A) May be similar in origin to the lunar maria to the lunar maria
B) Are cut by large grabens or linear rilles
C) Are older than Caloris basin
D) Are probably thick deposits of dust
9. One of these impact craters is on the Moon and the A
other is on Mercury. Click on the one on Mercury. Crater A has secondary im-
pacts close to the rim,
A while B has secondary
B craters farther from the
crater.
10. What explains for Mercury's iron large core? Choose A and D
the two most likely.
A) Mercury formed near the Sun in a zone that was
oxygen-poor and rich in metallic iron.
B) Mercury's magnetic field collected large masses of
iron during accretion.
C) During its early accretion, a large iron asteroid col-
lided with Mercury and the iron sank to its core.
D) A large impact stripped away the silicate shell from
an already differentiated Mercury.
11. Although both Mercury and Mars have similar gravity A) Mars is more volatile
fields, Mars has an atmosphere whereas Mercury does rich.
not. What is a possible explanation?
A) Mars is more volatile rich.
B) Mercury's volatiles are frozen at its poles to form ice
caps.
Study online at https://quizlet.com/_8unnlh
1. Would you be surprised if tomorrow's newspaper re- A) Yes, that is not expected
ported that a volcano was discovered erupting on Mer- to happen on Mercury to-
cury? day.
A) Yes, that is not expected to happen on Mercury
today.
B) No, Mercury is so hot because it is near the Sun that
this would be expected.
C) No, Mercury has such a large iron core that it has
cooled very slowly and could still have volcanoes erupt
on its surface.
D) No, the tidal heating from the nearby Sun keeps it
volcanically active.
2. What causes the differences betweenimpact craters B) Different gravitational
on the Moon and those on Mercury (the extent of the attractions on each planet
ejecta blanket and secondary cratering)?
A) Differences in the cratering rate
B) Different gravitational attractions on each planet
C) Crustal deformation
D) The size of the meteorites impacting Mercury
3. What do thermal models of Mercury's evolution sug- C) That it developed a
gest about its history? metallic core early in its
A) That it has developed a core in the last billion years history
or so.
B) That it experienced global expansion to produce
domical bulges.
C) That it developed a metallic core early in its history.
D) That its history is more like the Earth's than the
Moon's.
, BYU GEOL 109 Exam 2
Study online at https://quizlet.com/_8unnlh
4. The oldest types of terrains on both the Moon and B) Heavily cratered terrain
Mercury are ________________________.
A) Smooth, flood lava plains
B) Heavily cratered terrain
C) Folded mountain belts
D) Characterized by sinuous rilles and linear rilles
5. Which of the following features are found on the Moon A, C, D, and E
and Mercury? (Check all that apply)
A) Flood lavas
B) Dunes
C) Multiring basins
D) Impact craters
E) Faults related to contraction
6. Which image shows a feature that formed by contrac- B
tion of Mercury's surface? Contraction produces lo-
bate features, while exten-
A sion produces linear val-
B leys.
7. Which of the following tectonic processes are thought A and D
to have occurred on Mercury? (Check all that apply)
A) Thrust faulting due to contraction of the planet
B) Thrust faulting due to expansion of the planet as it
heated
C) Graben formation due to contraction
D) Graben formation due to extension
, BYU GEOL 109 Exam 2
Study online at https://quizlet.com/_8unnlh
8. Mercury's smooth plains ____________________. A) May be similar in origin
A) May be similar in origin to the lunar maria to the lunar maria
B) Are cut by large grabens or linear rilles
C) Are older than Caloris basin
D) Are probably thick deposits of dust
9. One of these impact craters is on the Moon and the A
other is on Mercury. Click on the one on Mercury. Crater A has secondary im-
pacts close to the rim,
A while B has secondary
B craters farther from the
crater.
10. What explains for Mercury's iron large core? Choose A and D
the two most likely.
A) Mercury formed near the Sun in a zone that was
oxygen-poor and rich in metallic iron.
B) Mercury's magnetic field collected large masses of
iron during accretion.
C) During its early accretion, a large iron asteroid col-
lided with Mercury and the iron sank to its core.
D) A large impact stripped away the silicate shell from
an already differentiated Mercury.
11. Although both Mercury and Mars have similar gravity A) Mars is more volatile
fields, Mars has an atmosphere whereas Mercury does rich.
not. What is a possible explanation?
A) Mars is more volatile rich.
B) Mercury's volatiles are frozen at its poles to form ice
caps.
