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The NASA lander which deployed the first rover, Sojourner, in 1997 was:


A) Mars Rover.
B) Global Surveyor.
C) Viking 2.
D) South Polar Lander.
E) Pathfinder.

F) A) and E)
G) C) and E)

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Where do the names for the moons of Mars (Phobos and Deimos) come from?


A) the founders of Rome
B) the twins depicted in the constellation Gemini
C) the names of their discoverers
D) the sons of Ares and Aphrodite
E) the names of the dogs of Orion

F) A) and B)
G) B) and E)

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Where on Mars did Mars Odyssey's gamma-ray spectrometer find evidence of subsurfaceice?


A) at the equator
B) on Olympus Mons
C) at high latitudes
D) the Gale Crater
E) Valles Marineris

F) C) and E)
G) A) and D)

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The largest difference between Mars's northern and southern hemispheres is that:


A) the southern appears older, with more impact craters.
B) the northern has all the outflows and must have been much hotter.
C) the northern is higher overall, despite some high volcanoes in the south.
D) the southern has a polar cap, but none ever forms in the north.
E) the southern is much darker, with large mare-like basaltic lava flows.

F) D) and E)
G) A) and E)

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Mars undergoes seasons because of its eccentric orbit that carries it to widely differentdistances from the Sun, and because of its axial tilt which is similar to the Earth's.

A) True
B) False

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The ________ hemisphere of Mars appears older and more heavily cratered.

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The Tharsis Bulge on Mars is roughly the size of:


A) Mexico.
B) Asia.
C) Texas.
D) North America.
E) New York City.

F) D) and E)
G) B) and C)

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What makes the view of Mars in the summer of 2003 so spectacular?


A) There were huge dust storms that made the planet appear much brighter than usual.
B) The feature known as Olympus Mons erupted spewing ash into the Martian atmosphere.
C) Mars had an angular size comparable to the full Moon.
D) Mars was both at perihelion and opposition, creating the perfect viewing conditions fromEarth.
E) Earth's atmosphere was amazingly clear everywhere for months making the view ofspectacular Mars available to everyone.

F) B) and C)
G) A) and E)

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Valles Marineris is the most striking example of a(n) :


A) impact crater.
B) shield volcano.
C) oceanic trench.
D) rift valley.
E) scarp.

F) A) and E)
G) C) and D)

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Which of these is NOT now on the surface of Mars?


A) Mars Global Surveyor
B) Viking 1
C) Pathfinder
D) Sojourner
E) Spirit

F) B) and E)
G) None of the above

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Because of its axial tilt and more elliptical orbit, Mars's polar caps change size even more thando the Earth's.

A) True
B) False

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The runoff channels on Mars were most likely formed by:


A) melting underground ice.
B) catastrophic, but rare flooding.
C) the annual melting of the polar ice caps.
D) glaciers.
E) rain that was part of a water cycle.

F) A) and C)
G) B) and E)

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When the huge polar caps on Mars form every winter, they are made chiefly of ________.

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dry ice (f...

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Mars's mass is only a tenth of the Earth's, and its density is also less than the Earth's.

A) True
B) False

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Describe the primary difference between the northern and southern hemispheres on Mars.

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The northern hemisphere is pri...

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The largest and deepest impact basin found on Mars is:


A) Olympus.
B) Caloris.
C) Hellas.
D) Tharsis.
E) Meridani.

F) None of the above
G) A) and C)

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Most of the dark regions on Mars visible from Earth are:


A) features like the Valles Marineris.
B) lava flows from active volcanoes.
C) mountainous regions.
D) the seasonal growth of vegetation on the planet.
E) volcanic planes like the lunar maria.

F) B) and C)
G) A) and E)

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Why do oppositions of Mars stir such interest among amateur astronomers?

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Mars is small, and most of the time so d...

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Of all the planets, only ________ has surface features easily seen from Earth with evenamateur telescopes.

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One of the most unexpected aspects of Mars's atmosphere is:


A) that it is 95% carbon dioxide.
B) that its troposphere changes altitude.
C) that it is cloudless.
D) that it contains water vapor clouds.
E) that it has such a low density.

F) A) and B)
G) B) and C)

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