age 1 of 49
ASTRO 101 FINAL EXAM PREP 2025/2026 COMPLETE
QUESTIONS WITH CORRECT DETAILED ANSWERS ||
100% GUARANTEED PASS <BRAND NEW VERSION>
What is the Schwarzschild radius of a black hole?
.......Answer.........distance from the black hole's singularity to the
point where nothing can escape from the black hole
Which properties of the matter inside a black hole can be
measured from outside the black hole? .......Answer.........mass,
angular momentum, and electric charge
basic shape of a spiral galaxy .......Answer.........Round, flat disk
with long lanes of stars that curve outward from a round, nuclear
region of uniform brightness
,age 2 of 49
What is a pulsar? .......Answer.........rapidly rotating neutron star,
producing beams of radio energy and occasionally of X rays
and visible light
Nuclear fusion reactions of helium produce primarily
.......Answer.........Carbon and Oxygen Nuclei
What is the last nuclear fusion stage in the life of a low-mass
star like the Sun? .......Answer.........fusion of helium nuclei to form
carbon and oxygen
A planetary nebula is .......Answer.........a shell of ejected gases.
Stars that have ejected a planetary nebula go on to become
.......Answer.........White Dwarfs
,age 3 of 49
The Sun will end its life by becoming a .......Answer.........white
dwarf
A white dwarf star, as it evolves, undergoes which of the
following changes .......Answer.........Luminosity and temperature
decrease while its size remains constant
Which nuclear fusion cycle is the next one to begin after helium
fusion ends in a massive star? .......Answer.........carbon fusion
What is the source of most of the heavy elements on Earth and in
our own bodies .......Answer.........explosive nucleosynthesis during
supernova explosions of massive stars
An old high-mass star can have a number of shells (hydrogen,
helium, carbon, neon, oxygen, silicon) plus an iron core. Fusion
generally takes place everywhere except .......Answer.........Iron
Core
, age 4 of 49
The explosion of a supernova appears to leave behind
.......Answer.........a rapidly expanding shell of gas and a central
neutron
which of the following astronomical objects is most closely
associated with a pulsar? .......Answer.........neutron star
The diameter of a typical neutron star of 1 solar mass is
predicted to be approximately .......Answer.........that of an
average city, a few km
A white dwarf star is about the same size as
.......Answer.........earth
Two spaceships are traveling past Earth at 90% of the speed of
light in opposite directions (i.e., they are approaching each
other). One turns on a searchlight, which is seen by scientists
ASTRO 101 FINAL EXAM PREP 2025/2026 COMPLETE
QUESTIONS WITH CORRECT DETAILED ANSWERS ||
100% GUARANTEED PASS <BRAND NEW VERSION>
What is the Schwarzschild radius of a black hole?
.......Answer.........distance from the black hole's singularity to the
point where nothing can escape from the black hole
Which properties of the matter inside a black hole can be
measured from outside the black hole? .......Answer.........mass,
angular momentum, and electric charge
basic shape of a spiral galaxy .......Answer.........Round, flat disk
with long lanes of stars that curve outward from a round, nuclear
region of uniform brightness
,age 2 of 49
What is a pulsar? .......Answer.........rapidly rotating neutron star,
producing beams of radio energy and occasionally of X rays
and visible light
Nuclear fusion reactions of helium produce primarily
.......Answer.........Carbon and Oxygen Nuclei
What is the last nuclear fusion stage in the life of a low-mass
star like the Sun? .......Answer.........fusion of helium nuclei to form
carbon and oxygen
A planetary nebula is .......Answer.........a shell of ejected gases.
Stars that have ejected a planetary nebula go on to become
.......Answer.........White Dwarfs
,age 3 of 49
The Sun will end its life by becoming a .......Answer.........white
dwarf
A white dwarf star, as it evolves, undergoes which of the
following changes .......Answer.........Luminosity and temperature
decrease while its size remains constant
Which nuclear fusion cycle is the next one to begin after helium
fusion ends in a massive star? .......Answer.........carbon fusion
What is the source of most of the heavy elements on Earth and in
our own bodies .......Answer.........explosive nucleosynthesis during
supernova explosions of massive stars
An old high-mass star can have a number of shells (hydrogen,
helium, carbon, neon, oxygen, silicon) plus an iron core. Fusion
generally takes place everywhere except .......Answer.........Iron
Core
, age 4 of 49
The explosion of a supernova appears to leave behind
.......Answer.........a rapidly expanding shell of gas and a central
neutron
which of the following astronomical objects is most closely
associated with a pulsar? .......Answer.........neutron star
The diameter of a typical neutron star of 1 solar mass is
predicted to be approximately .......Answer.........that of an
average city, a few km
A white dwarf star is about the same size as
.......Answer.........earth
Two spaceships are traveling past Earth at 90% of the speed of
light in opposite directions (i.e., they are approaching each
other). One turns on a searchlight, which is seen by scientists
