Question 1

The ____________________ hypothesis suggests that the Milky Way galaxy formed from a single cloud that flattened into a disk.

Accepted Answer

monolithic

Question 2

Shapley found the distance to the center of the galaxy by studying the distance to open clusters.

Accepted Answer

A) True 
 B)False

Question 3

As viewed edge-on, we can see all the spurs and branches off the arms of the Milky Way galaxy.

Accepted Answer

A) True 
 B)False

Question 4

Globular clusters are primarily found in the ____________________ component of the galaxy.

Accepted Answer

The answer of Globular clusters are primarily found in the...

Question 5

How is the age of the galaxy determined?

Accepted Answer

A)  measuring the metallicity of Population II stars 
B)  finding the turnoff point in the H-R diagram of globular clusters 
C)  from the motion of stars in the galactic halo 
D)  counting the number of open clusters in the spiral arms 
A)  measuring the metallicity of Population II stars 
B)  finding the turnoff point in the H-R diagram of globular clusters 
C)  from the motion of stars in the galactic halo 
D)  counting the number of open clusters in the spiral arms

Question 6

What is the orientation of the galaxy shown above relative to us on Earth?

Accepted Answer

A)  edge-on 
B)  face-on 
C)  nearly edge-on 
D)  None of the other choices are correct. 
A)  edge-on 
B)  face-on 
C)  nearly edge-on 
D)  None of the other choices are correct.

Question 7

Which of the following is not a characteristic of the stars of the disk component of our galaxy?

Accepted Answer

A)  circular orbits 
B)  randomly inclined orbits 
C)  higher metal abundance 
D)  young stars 
E)  star-formation regions 
A)  circular orbits 
B)  randomly inclined orbits 
C)  higher metal abundance 
D)  young stars 
E)  star-formation regions

Question 8

The mass of the black hole at the center of our galaxy can be estimated using the ____ of a star orbiting it.

Accepted Answer

A)  semi-major axis 
B)  orbital period 
C)  semi-major axis and orbital period 
D)  neither semi-major axis nor orbital period 
A)  semi-major axis 
B)  orbital period 
C)  semi-major axis and orbital period 
D)  neither semi-major axis nor orbital period

Question 9

Almost every celestial object we see in the sky on a dark, clear night is within the Milky Way galaxy.

Accepted Answer

A) True 
 B)False

Question 10

The traditional "top-down" hypothesis states that the galaxy formed

Accepted Answer

A)  from a large spherical cloud of gas that was rotating very slowly. 
B)  from a large cloud of material that broke off a larger galaxy. 
C)  from material that had been ejected in the violent explosion of a dying galaxy. 
D)  as a result of mergers between several smaller groups of gas, dust, and stars. 
E)  as two massive galaxies collided. 
A)  from a large spherical cloud of gas that was rotating very slowly. 
B)  from a large cloud of material that broke off a larger galaxy. 
C)  from material that had been ejected in the violent explosion of a dying galaxy. 
D)  as a result of mergers between several smaller groups of gas, dust, and stars. 
E)  as two massive galaxies collided.

Question 11

The production of elements heavier than helium by fusion in stars and during supernova explosions is called ______________________.

Accepted Answer

The answer of The production of elements heavier than helium...

Question 12

The center of our galaxy lies in the direction of (but far beyond) the stars in the constellation of

Accepted Answer

A)  Ursa Minor. 
B)  Ursa Major. 
C)  Sagittarius. 
D)  Orion. 
E)  Monoceros. 
A)  Ursa Minor. 
B)  Ursa Major. 
C)  Sagittarius. 
D)  Orion. 
E)  Monoceros.

Question 13

The relative abundance of chemical elements are shown by atomic mass number. Of those shown, which is the most abundant?

Accepted Answer

A)  hydrogen 
B)  helium 
C)  carbon 
D)  iron 
A)  hydrogen 
B)  helium 
C)  carbon 
D)  iron

Question 14

The period-luminosity relationship is primarily used for main-sequence stars.

Accepted Answer

A) True 
 B)False

Question 15

The units of proper motion are km/s because proper motion is the motion of stars across the sky.

Accepted Answer

A) True 
 B)False

Question 16

Giant molecular cloud complexes are located in spiral arms.

Accepted Answer

A) True 
 B)False

Question 17

Who first used RR Lyrae variable stars to determine distances in our Milky Way galaxy?

Accepted Answer

A)  Henrietta Leavitt 
B)  Edwin Hubble 
C)  John Glenn 
D)  Carl Sagan 
E)  Harlow Shapley 
A)  Henrietta Leavitt 
B)  Edwin Hubble 
C)  John Glenn 
D)  Carl Sagan 
E)  Harlow Shapley

Question 18

Astronomers before Shapely underestimated the size of the Milky Way galaxy because they lacked telescopes.

Accepted Answer

A) True 
 B)False

Question 19

In the edge-on sketch of a spiral galaxy, pick the letter corresponding most nearly to the location of globular clusters.

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
A)  A 
B)  B 
C)  C 
D)  D

Question 20

The Milky Way galaxy is an example of a grand-design galaxy.

Accepted Answer

A) True 
 B)False

The ____________________ hypothesis suggests that the Milky Way galaxy formed from a single cloud that flattened into a disk.

Shapley found the distance to the center of the galaxy by studying the distance to open clusters.

As viewed edge-on, we can see all the spurs and branches off the arms of the Milky Way galaxy.

Globular clusters are primarily found in the ____________________ component of the galaxy.

How is the age of the galaxy determined?

What is the orientation of the galaxy shown above relative to us on Earth?

Which of the following is not a characteristic of the stars of the disk component of our galaxy?

The mass of the black hole at the center of our galaxy can be estimated using the ____ of a star orbiting it.

Almost every celestial object we see in the sky on a dark, clear night is within the Milky Way galaxy.

The traditional "top-down" hypothesis states that the galaxy formed

The production of elements heavier than helium by fusion in stars and during supernova explosions is called ______________________.

The center of our galaxy lies in the direction of (but far beyond) the stars in the constellation of

The relative abundance of chemical elements are shown by atomic mass number. Of those shown, which is the most abundant?

The period-luminosity relationship is primarily used for main-sequence stars.

The units of proper motion are km/s because proper motion is the motion of stars across the sky.

Giant molecular cloud complexes are located in spiral arms.

Who first used RR Lyrae variable stars to determine distances in our Milky Way galaxy?

Astronomers before Shapely underestimated the size of the Milky Way galaxy because they lacked telescopes.

In the edge-on sketch of a spiral galaxy, pick the letter corresponding most nearly to the location of globular clusters.

The Milky Way galaxy is an example of a grand-design galaxy.

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

Galaxies: Normal and Active

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters

Exam 12: The Milky Way Galaxy

The ____________________ hypothesis suggests that the Milky Way galaxy formed from a single cloud that flattened into a disk.

Shapley found the distance to the center of the galaxy by studying the distance to open clusters.

As viewed edge-on, we can see all the spurs and branches off the arms of the Milky Way galaxy.

Globular clusters are primarily found in the ____________________ component of the galaxy.

How is the age of the galaxy determined?

What is the orientation of the galaxy shown above relative to us on Earth?

Which of the following is not a characteristic of the stars of the disk component of our galaxy?

The mass of the black hole at the center of our galaxy can be estimated using the ____ of a star orbiting it.

Almost every celestial object we see in the sky on a dark, clear night is within the Milky Way galaxy.

The traditional "top-down" hypothesis states that the galaxy formed

The production of elements heavier than helium by fusion in stars and during supernova explosions is called ______________________.

The center of our galaxy lies in the direction of (but far beyond) the stars in the constellation of

The relative abundance of chemical elements are shown by atomic mass number. Of those shown, which is the most abundant?

The period-luminosity relationship is primarily used for main-sequence stars.

The units of proper motion are km/s because proper motion is the motion of stars across the sky.

Giant molecular cloud complexes are located in spiral arms.

Who first used RR Lyrae variable stars to determine distances in our Milky Way galaxy?

Astronomers before Shapely underestimated the size of the Milky Way galaxy because they lacked telescopes.

In the edge-on sketch of a spiral galaxy, pick the letter corresponding most nearly to the location of globular clusters.

The Milky Way galaxy is an example of a grand-design galaxy.

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

Galaxies: Normal and Active

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters