The determining factor in the stages a star will progress through from birth to death is its
A) mass.
B) temperature.
C) composition.
D) relative density.
Answer: A
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The unusual nature of viruses (behaving as living organisms while within them, but becoming inert while isolated) has caused scientists to consider the possibility that:
A) viruses may be considered a kind of life. B) the ability to breathe may need to be added to the definition of life. C) the ability to evolve or mutate should be added to the definition of life. D) the ability to grow should be added to the definition of life. E) the definition of life may be more complex than a simple check list.
Refer to the race described above. According to Ben, what happens?
A) The light beam gradually pulls ahead of him and wins the race because it is going 1 percent of the speed of light faster than him. B) The light beam instantly finishes the race, before Ben even has a chance to start. C) The light beam moves out ahead of him at the full speed of light, winning the race easily. D) Ben wins the race and becomes a hero.
A 10 solar mass main sequence star will produce which of the following remnants?
A) black hole B) white dwarf C) neutron star D) none of the above
A +6.0 magnitude star is brighter than a +3.0 magnitude star
Indicate whether the statement is true or false