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ASTRONOMY 1010 FINAL EXAM
2025/2026 NEWEST EXAM CURRENTLY
TESTING COMPLETE 400 QUESTIONS
WITH DETAILED VERIFIED ANSWERS
EXPERT VERIFIED FOR A+ GRADE
Which of the following is the phase of matter in the interior of the
Sun?
A) gas
B) plasma
C) solid
D) liquid
E) a mixture of all of the above ......answer.....B) Plasma
At the center of the Sun, nuclear fusion converts hydrogen into
A) helium, gamma rays, and neutrinos.
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B) radiation and elements such as carbon and nitrogen.
C) hydrogen compounds such as methane.
D) radioactive elements such as uranium and plutonium.
E) molecular hydrogen. ......answer.....A) helium, gamma rays, and
neutrinos.
What is the only force that can overcome the repulsion between
two positively charged nuclei and bind them together?
A) the weak (nuclear) force
B) the strong (nuclear) force
C) the Coriolis force
D) the electromagnetic force
E) the gravitational force ......answer.....B) The strong (nuclear)
force
What would happen to the core of the sun if its temperature rose
slightly?
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A) The rate at which fusion occurs would increase, leading to a
contraction of the core, which would in
turn cause the temperature to rise even further.
B) The rate at which fusion occurs would decrease, leading to a
contraction of the core, which would in
turn cause the temperature to rise even further.
C) The rate at which fusion occurs would increase, leading to an
expansion of the core, which would in
turn cause the temperature to drop back down.
D) The rate at which fusion occurs would decrease, leading to an
expansion of the core, which would in
turn cause the temperature to drop back down. ......answer.....C)
The rate at which fusion occurs would increase, leading to an
expansion of the core, which would in turn cause the temperature
to drop back down
By what process does the Sun generate energy?
A) gravitational contraction
B) gradual expansion
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C) nuclear fusion
D) chemical reactions
E) nuclear fission ......answer.....C) nuclear fusion
Why do sunspots appear dark?
A) They are composed of different elements than the rest of the
sun.
B) They are regions that do not emit any radiation.
C) They are regions nearly devoid of gas.
D) They are regions that are significantly cooler than the rest of the
photosphere. ......answer.....D) they are regions that are
significantly cooler than the rest of the photosphere
Which of the following statements about the sunspot cycle is not
true?
A) The magnetic polarity of the Sun reverses approximately every 11
years.
B) At solar minimum, the first sunspots usually form at mid-
latitudes on the Sun.
ASTRONOMY 1010 FINAL EXAM
2025/2026 NEWEST EXAM CURRENTLY
TESTING COMPLETE 400 QUESTIONS
WITH DETAILED VERIFIED ANSWERS
EXPERT VERIFIED FOR A+ GRADE
Which of the following is the phase of matter in the interior of the
Sun?
A) gas
B) plasma
C) solid
D) liquid
E) a mixture of all of the above ......answer.....B) Plasma
At the center of the Sun, nuclear fusion converts hydrogen into
A) helium, gamma rays, and neutrinos.
,2|Page
B) radiation and elements such as carbon and nitrogen.
C) hydrogen compounds such as methane.
D) radioactive elements such as uranium and plutonium.
E) molecular hydrogen. ......answer.....A) helium, gamma rays, and
neutrinos.
What is the only force that can overcome the repulsion between
two positively charged nuclei and bind them together?
A) the weak (nuclear) force
B) the strong (nuclear) force
C) the Coriolis force
D) the electromagnetic force
E) the gravitational force ......answer.....B) The strong (nuclear)
force
What would happen to the core of the sun if its temperature rose
slightly?
,3|Page
A) The rate at which fusion occurs would increase, leading to a
contraction of the core, which would in
turn cause the temperature to rise even further.
B) The rate at which fusion occurs would decrease, leading to a
contraction of the core, which would in
turn cause the temperature to rise even further.
C) The rate at which fusion occurs would increase, leading to an
expansion of the core, which would in
turn cause the temperature to drop back down.
D) The rate at which fusion occurs would decrease, leading to an
expansion of the core, which would in
turn cause the temperature to drop back down. ......answer.....C)
The rate at which fusion occurs would increase, leading to an
expansion of the core, which would in turn cause the temperature
to drop back down
By what process does the Sun generate energy?
A) gravitational contraction
B) gradual expansion
, 4|Page
C) nuclear fusion
D) chemical reactions
E) nuclear fission ......answer.....C) nuclear fusion
Why do sunspots appear dark?
A) They are composed of different elements than the rest of the
sun.
B) They are regions that do not emit any radiation.
C) They are regions nearly devoid of gas.
D) They are regions that are significantly cooler than the rest of the
photosphere. ......answer.....D) they are regions that are
significantly cooler than the rest of the photosphere
Which of the following statements about the sunspot cycle is not
true?
A) The magnetic polarity of the Sun reverses approximately every 11
years.
B) At solar minimum, the first sunspots usually form at mid-
latitudes on the Sun.
