What is Hubble's law?
A) The luminosity of the Cepheid variable star is directly proportional to its pulsation period.
B) The recession velocity of a galaxy is directly proportional to its distance.
C) The recession velocity of a galaxy is inversely proportional to its distance.
D) The faster a spiral galaxy's rotation speed, the more luminous it is.
E) The faster a spiral galaxy's rotation speed, the less luminous it is.
Correct Answer:
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Q3: What is the major difference between an
Q5: How does a lenticular galaxy differ from
Q9: The disk component of a spiral galaxy
Q10: Why are Cepheid variables important?
A) Cepheid variables
Q11: How did Edwin Hubble measure the distance
Q11: Which types of galaxies have a clearly
Q12: Compared to spiral galaxies,elliptical galaxies are
A)redder and
Q13: Why is the Hyades Cluster important for
Q13: Approximately how many stars does a dwarf
Q16: Most large galaxies in the universe are
A)elliptical.
B)spiral
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