If a star appears to move back and forth relative to other stars over a six-month period, this motion is due to the star's
A) transverse motion.
B) radial motion.
C) parallax shift.
D) Doppler shift.
E) true space motion.
Question 2How does the mass of Jupiter compare with that of the other planets?
A) It is slightly larger and more massive than Saturn.
B) It is similar to that of the Earth and Venus.
C) It is twice as massive as all other planets combined.
D) It is almost as massive as Saturn.
E) It is about a tenth the mass of the Sun.
Question 3The condensation theory is an example of:
A) a catastrophic theory.
B) a hot Jupiter theory.
C) a collision hypothesis.
D) an evolutionary theory.
E) a capture theory.
Question 4According to the parameters derived for the Drake Equation, where should astronomers look for life in the Milky Way?
A) around F, G, or M stars that are in multiple star systems located in the galactic habitable zone with a multiple planet system with jovian outer planets and at least one terrestrial planet within the star's habitable zone
B) around O, B, or A stars that are in single star systems located in the galactic nucleus with a multiple planet system with jovian outer planets and at least one terrestrial planet within the star's habitable zone
C) around F, G, or M stars that are in single star systems located in the galactic habitable zone with a multiple planet system with jovian outer planets and at least one terrestrial planet within the star's habitable zone
D) around O, B, or A stars that are in single star systems located in the galactic habitable zone with a multiple planet system with jovian outer planets and at least one terrestrial planet within the star's habitable zone
E) around F, G, or M stars that are in single star systems located in the galactic habitable zone with a multiple planet system with no outer planets and at least one terrestrial planet within the star's habitable zone
Quick Reply
