In comparing the Terrestrial planets, which planet is most similar in size to Earth?
a. Mercury
b. Venus
c. Mars
d. the Moon
e. Neptune
b
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After an earthquake, an S-type seismic wave travels with a velocity of about 10 km/s and reaches another part of Earth in about 10 minutes. How far has the S-type wave traveled?
A. 1,000 km B. 60 km C. 600 km D. 100 km E. 6,000 km
Lunar eclipses do not occur every full Moon, because the path of the ________ is tilted relative to the ________.
A. Sun; ecliptic B. Moon; ecliptic C. Earth; ecliptic D. Moon; equator
It would be easier to pull the evacuated Magdeburg hemispheres apart if they were
A) held upside down. B) at sea level. C) 20 km beneath the ocean surface. D) 20 km above the ocean surface. E) none of the above
The quantum mechanical model of the hydrogen atom requires that if the orbital magnetic quantum number is 3, there will be how many permitted spin magnetic quantum numbers?
a. 2 b. 3 c. 4 d. 6 e. 7