Which of these is NOT a consequence of resonance?
A) the Moon's periods of rotation and revolution are equal
B) the orbital periods of Neptune and Pluto
C) the Kirkwood Gaps in the asteroid belt
D) Venus' cloud and surface rotation rates
E) Mercury's rotation and revolution around the Sun
Question 2What evidence do we have that Jupiter must have a substantial solid core under the thick clouds?
A) Its magnetic field must be form by rotating molten iron, like our own.
B) Occasional breaks in the clouds reveal a solid surface at times.
C) Jupiter's disk is more oblate than it should be, suggesting it has a higher density.
D) Jupiter's disk is less oblate than it should be, if it were only hydrogen and helium.
E) The Io flux tube goes straight down to Jupiter's iron core.
Question 3The huge lobe radio galaxy at the center of the Virgo Supercluster is:
A) Virgo X-1.
B) M-87, a giant elliptical galaxy.
C) M-74, a very bright Seyfert Spiral.
D) M-82, disturbed by the passage of M-81 nearby.
E) the Large Magellanic Cloud, disturbed by Supernova 1987A.
Question 4Which of these technological advances would make it harder for extraterrestrial life to find us?
A) FM radio
B) color television
C) the Global Positioning Satellite Network
D) cable TV
E) geosynchronous satellites
Question 5Which of the following statements about stages of nuclear burning (i.e., first-stage hydrogen burning, second-stage helium burning, etc.) in a massive star is not true?
A) Each successive stage of fusion requires higher temperatures than the previous stages.
B) As each stage ends, the core shrinks further.
C) Each successive stage creates an element with a higher atomic weight.
D) Each successive stage lasts for approximately the same amount of time.
Question 6According to our modern science, which of the following best explains why the vast majority of the mass of our solar system consists of hydrogen and helium gas?
A) Hydrogen and helium are the most common elements throughout the universe, because they were the only elements present when the universe was young.
B) Hydrogen and helium are produced in stars by nuclear fusion.
C) All the other elements escaped from the solar nebula before the Sun and planets formed.
D) All the other elements were swept out of the solar system by the solar wind.
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