Why doesn't Venus have seasons like Mars and Earth do?
A) It does not have an ozone layer.
B) It is too close to the Sun.
C) Its rotation axis is not tilted.
D) It does not rotate fast enough.
E) all of the above
C
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Which of the following statements about Pluto is true?
A) It has more in common with other icy objects in the Kuiper belt than it does with the jovian planets (Jupiter, Saturn, Uranus, Neptune). B) It is the most massive object that orbits the Sun beyond the orbit of Neptune. C) It is orbited by only one moon. D) It is the only object in our solar system that is categorized as a "dwarf planet."
Significant Figures: What is the sum of 2.67 + 1.976 + 2.1 expressed to the correct number of significant figures?
A. 6.7 B. 6.75 C. 6.746 D. 6.7460
Life probably did not originate on the land surface because
A) impacts would have destroyed any life that appeared B) water was not plentiful on land C) there was no ozone layer to shield out harmful UV rays D) organic materials were not present on the land
Two harmonic waves traveling in opposite directions interfere to produce a standing wave described by y = 2sin(?x)cos(3?t), where x is in m and t is in s. What is the distance (in m) between the first two antinodes?
A. 8 B. 2 C. 4 D. 1 E. 0.5