The unusual surface terrain on Uranus\' satellite Miranda is believed to have or
ID: 231564 • Letter: T
Question
The unusual surface terrain on Uranus' satellite Miranda is believed to have originated
A) in tectonic plate motion.
B) when an impactor struck the body and remained embedded.
C) in a powerful internal explosion that occurred early in Miranda's history.
D) when large blocks of ice and rock were lifted off the surface in an impact and settled back.
How was Neptune discovered?
A) accidentally, by an astronomer taking photographs for an all-sky survey
B) accidentally, by an astronomer studying the sky visually through a telescope
C) by a careful application of Newton's laws to the somewhat irregular motions of Uranus
D) by a careful search with the Hubble Space Telescope
Which of the following statements correctly describes how Neptune differs from Uranus?
A) Neptune rotates quite rapidly (16 hours), whereas Uranus rotates very slowly (243 days).
B) A number of storms and ice clouds are visible in Neptune's atmosphere, whereas Uranus's atmosphere appears almost featureless.
C) Neptune is circled by a system of narrow, dark rings, whereas the rings of Uranus are wide, like those of Saturn.
D) Neptune's magnetic axis is closely aligned with its rotation axis, whereas for Uranus the two axes are at a large angle to each other.
Explanation / Answer
1) D. when large blocks of ice and rock were lifted off the surface in an impact and settled back.
2) C. by a careful application of Newton's laws to the somewhat irregular motions of Uranus
3) D. Neptune's magnetic axis is closely aligned with its rotation axis, whereas for Uranus the two axes are at a large angle to each other.
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