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Astronomy 101 Exam 4 Questions And
Answers |Latest 2025 | Guaranteed Pass.
Stars are formed from cold interstellar gas clouds made of: - Answer✔molecular hydrogen gas
and dust grains
Objects more massive than our Sun form into stars: - Answer✔much faster, over tens of
thousands of years
A star like our sun will spend most of its "shining" lifetime as: - Answer✔a main sequence star
All stars in a stellar cluster have roughly the same: - Answer✔distance
-age and composition are also the same
The event that marks the end of a star's evolutionary life before becoming a white dwarf is: -
Answer✔a planetary nebula
A nova involves: - Answer✔mass transfer onto a white dwarf in a binary star system
Astronomers determine the age of star clusters by observing: - Answer✔luminosity of stars at
the turnoff point
The location of the galactic center was identified using: - Answer✔red giants that were part of
variable globular clusters
Our sun is located in the Milky Way galaxy: - Answer✔about halfway from the center in the
spiral arms
Kepler's Third Law applies to: - Answer✔any gravitational mass
What two observations allow us to estimate the galaxy's mass? - Answer✔orbital period and
distance from the galactic center of objects near the edge of the galaxy
When we observe stars near the center of the Milky Way, we detect light that was emitted
from those stars: - Answer✔about 25,000 years ago
High speed motion of gas and stars near the Milky Way's center is explained by: - Answer✔a
supermassive black hole
1
Astronomy 101 Exam 4 Questions And
Answers |Latest 2025 | Guaranteed Pass.
Stars are formed from cold interstellar gas clouds made of: - Answer✔molecular hydrogen gas
and dust grains
Objects more massive than our Sun form into stars: - Answer✔much faster, over tens of
thousands of years
A star like our sun will spend most of its "shining" lifetime as: - Answer✔a main sequence star
All stars in a stellar cluster have roughly the same: - Answer✔distance
-age and composition are also the same
The event that marks the end of a star's evolutionary life before becoming a white dwarf is: -
Answer✔a planetary nebula
A nova involves: - Answer✔mass transfer onto a white dwarf in a binary star system
Astronomers determine the age of star clusters by observing: - Answer✔luminosity of stars at
the turnoff point
The location of the galactic center was identified using: - Answer✔red giants that were part of
variable globular clusters
Our sun is located in the Milky Way galaxy: - Answer✔about halfway from the center in the
spiral arms
Kepler's Third Law applies to: - Answer✔any gravitational mass
What two observations allow us to estimate the galaxy's mass? - Answer✔orbital period and
distance from the galactic center of objects near the edge of the galaxy
When we observe stars near the center of the Milky Way, we detect light that was emitted
from those stars: - Answer✔about 25,000 years ago
High speed motion of gas and stars near the Milky Way's center is explained by: - Answer✔a
supermassive black hole
1
