Question

2. Which of the four fundamental forces pulled together hot, dense areas of matter in the
early Universe to jumpstart the process of star formation?
a. gravity b. electromagnetism c. weak nuclear fusion d. strong nuclear fusion
3. In what stage of a star's life happen when a core can no longer produce its fuel as star
explodes and releases a large amount of energy?
a. nebula
b. giant star
C. supernova
d. main sequence
4. Which of the following is a major factor in determining the life span of a star?
a. strength of gravitational force
c. temperature of the star
b. amount of iron produced
d. mass of the star
5. What is the proper stellar evolution sequence of a low-mass star?
a. protostar> main sequence star> red giant > white dwarf
b. protostar> main sequence star> white dwarf> red giant
c. main sequence star> protostar> red giant> white dwarf
d. main sequence star> red giant> white dwarf> protostar
6. One of the key evidences of the Big Bang Theory is the ratio of hydrogen to helium. Which
of the following best states the amount of these elements in the universe?
a. 75% hydrogen and 75% helium
c. 75% lithium and 25% hydrogen
b. 25% hydrogen and 75% helium
d. 25% helium and 75% hydrogen
7. Which of the following elements is NOT formed during stellar nucleosynthesis?
a. Cadmium
b. Oxygen
c. Carbon
d. Silicon
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Answer 1

Answer:

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