After a full moon, about how long is it until the next new moon?
A. a week
B. 6 hours
C. 2 weeks
D. a month
Answer: C
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An intermediate _____________can have a wider region of possible compositions than does an intermediate compound.
Fill in the blank(s) with the appropriate word(s).
On its icy surface, Uranus's satellite Ariel has smooth valleys with few craters. Other areas are rough with many craters. Based on this, it can be concluded that
a. valleys are young and the rough areas are old. b. the valleys are old and the rough areas are young. c. both valleys and rough areas are young. d. both valleys and rough areas are old.
Which of the following does not have a major effect in shaping planetary surfaces?
A) impact cratering B) volcanism C) tectonics D) erosion E) magnetism
Early 21st Century research in nuclear fusion uses
A) laser beams. B) ultra-hot plasmas. C) both of these D) neither of these