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Where is most of the water on Mars believed to be?

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In the polar caps an...

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Mars has a weak magnetic field.

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Mars' magnetic field is so weak because:


A) it spins much slower than Earth does.
B) it core may no longer be molten.
C) its core contains less iron than our own.
D) Both B and C are probable.
E) All of the above are correct.

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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

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Mars has an axial tilt more like the Earth's than any other planet.

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The largest shield volcano yet discovered is:


A) Maxwell Mons on Venus.
B) Kilimanjaro on Earth.
C) Olympus Mons on Mars.
D) Prometheus on Io.
E) Caloris on Mercury.

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One of the most unexpected aspects of Mars' 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.

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The large canyon of Mars,Valles Marineris,is a ________ produced when the entire Tharsis region bulged outward causing the surface to split.

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rift valle...

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Our Moon and Mars both have very different hemispheres.Compare them and explain why this occurred in each case.

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The far side of our Moon and southern he...

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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 from Earth.
E) Earth's atmosphere was amazingly clear everywhere for months making the view of spectacular Mars available to everyone.

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The deepest depression found on the surface of Mars is the:


A) Mariannas Trench.
B) Caloris basin.
C) Valles Marineris rift.
D) Hellas Basin of Mars.
E) Mare Crisium.

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The most prominent feature of Mars observable from Earth is:


A) its thick atmosphere.
B) its two prominent moons.
C) its bright polar caps.
D) the large volcano Olympus Mons.
E) the prominent feature, Valles Marineris.

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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.

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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.

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Olympus Mons is the tallest (volcanic)mountain in the entire solar system.Explain how Mars can have mountains taller than the ones on Earth.

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Due to Mars' smaller mass and,...

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The largest volcano in the solar system,________,is found on Mars.

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The seasonal changes on Mars create:


A) remarkable changes in size of the two dry ice polar caps.
B) changes in the dark features noted from Earth by telescopes long ago.
C) huge dust storms that can enshroud the planet's disk.
D) great changes in the barometric pressure as the atmosphere freezes and sublimes.
E) All of these are correct.

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What causes the changing dark and light features visible on the Martian surface from Earth?


A) seasonal growth of vegetation
B) the flooding of the network of canals from seasonal polar ice melting
C) lava fields, similar to those found on the Moon
D) highly cratered and eroded areas that are frequently covered and uncovered by dust
E) huge storms like those on Jupiter with winds that often reach speeds of hundreds of kilometers per hour

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The main constituent of the Martian atmosphere is:


A) hydrogen.
B) helium.
C) methane.
D) carbon dioxide.
E) nitrogen.

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The most striking valley in the solar system is:


A) the Grand Canyon in Arizona.
B) Gwenivere on Venus.
C) the Discovery Scarp of Mercury.
D) Valles Marineris on Mars.
E) Valhalla on Callisto.

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