Is it possible for an observer at 28°N to see the full moon on the zenith? Why or why not?
It is possible for an observer at 28°N to see the full moon on his or her zenith. The
maximum northern latitude of the Moon is 23.5° + 5° or 28.5°.
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The very large size of Olympus Mons indicates that Mars has ____
a. plate tectonics b. no plate tectonics c. a thick atmosphere d. a molten core e. a very active surface
How does the strength of Jupiter's magnetic field compare to that of Earth's magnetic field?
A) Jupiter's magnetic field strength is about the same as Earth's. B) Jupiter's magnetic field is about twice as strong as Earth's. C) Jupiter's magnetic field is about 20,000 times as strong as Earth's. D) Jupiter's magnetic field is much weaker than Earth's.
Beneath the surface of which moon of Jupiter is there the strongest evidence for the existence of a subsurface ocean of liquid water?
A) Io B) Callisto C) Europa D) Ganymede
The Sun's photosphere is, by mass, about 75%
a. helium. b. carbon. c. hydrogen. d. oxygen.