Two people are balanced on a seesaw. If one person leans inward toward the center of the seesaw, that person's end of the seesaw tends to
A) rise.
B) fall.
C) stay at the same level.
D) need more information
Answer: A
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On the autumnal equinox, the Sun sets ________.
A. south of west B. south of east C. due east D. due west E. north of east
When does the new Moon phase occur?
A. when Earth is between the Sun and the Moon B. when the Moon is between Earth and the Sun C. when the Sun is between Earth and the Moon D. when the Sun and the Moon are on the Celestial Equator
Why is the southern hemisphere of Mars believed to be older than the northern?
A) The southern hemisphere is darker much like the lunar mare. B) The southern hemisphere is more heavily cratered. C) The northern hemisphere is higher, due to the Tharsis Bulge. D) The northern hemisphere leans more away from the Sun in winter. E) The south polar cap is much thicker than the north one.
The symbol notation now used for elements was developed by
a. Dalton. b. Berzelius. c. Rutherford. d. Bohr.