Question 1

Which of the following astronomers determined that the Sun was NOT at the center of the Milky Way?

Accepted Answer

A)   Galileo
B)   Shapley
C)   Kapteyn
D)   Herschel

Question 2

What does the distribution of gas and dust in the Milky Way tell us about the relative ages of the disk and stellar halo?

Accepted Answer

The stellar halo lacks gas and...

Question 3

Which of the following is present near the center of the Milky Way?

Accepted Answer

A)   a supermassive black hole
B)   an absence of luminous stars
C)   an active galactic nucleus
D)   a bright ultraviolet source on the night sky

Question 4

The development of infrared astronomy enabled the discovery of:

Accepted Answer

A)   dark matter.
B)   the first extrasolar planets.
C)   low-mass stars.
D)   the Milky Way's bar.

Question 5

Astronomers detect an old star with a velocity perpendicular to the Sun's 1 kpc from Earth.Of which component is it most likely a part?

Accepted Answer

A)   halo
B)   disk
C)   bulge
D)   bar

Question 6

According to present observations,how does the Milky Way's black hole compare to those at the center of powerful active galactic nuclei?

Accepted Answer

A)   The Milky Way's black hole is much more massive.
B)   The Milky Way's black hole is not spinning.
C)   The Milky Way's black hole is much less massive.
D)   The Milky Way's black hole is spinning more rapidly.

Question 7

Which of the following provides evidence that the Milky Way's halo is an old system?

Accepted Answer

A)   the lack of gas clouds
B)   the chemical composition of the halo stars
C)   the HR diagrams of globular clusters
D)   all of the above

Question 8

Which component of the Milky Way has the most stars?

Accepted Answer

A)   disk
B)   bar
C)   bulge
D)   halo

Question 9

How does the density of stars (measured in stars per cubic parsec) in the Milky Way's bulge compare to that in the Sun's neighborhood?

Accepted Answer

A)   The Sun's neighborhood is 10 times denser.
B)   The bulge is 10 times denser.
C)   The Sun's neighborhood is 104 times denser.
D)   The bulge is 104 times denser.

Question 10

A collection of gravitationally bound stars,numbering about 100 billion,is most likely a(n) :

Accepted Answer

A)   galaxy.
B)   open cluster.
C)   globular cluster.
D)   supercluster.

Exam 15: Our City of Stars: the Milky Way

According to present observations,how does the Milky Way's black hole compare to those at the center of powerful active galactic nuclei?

Correct Answer
verified

What does the distribution of gas and dust in the Milky Way tell us about the relative ages of the disk and stellar halo?

Correct Answer
verified
The stellar halo lacks gas and...
View Answer

Astronomers detect an old star with a velocity perpendicular to the Sun's 1 kpc from Earth.Of which component is it most likely a part?

Correct Answer
verified

Which of the following is present near the center of the Milky Way?

Correct Answer
verified

Which of the following astronomers determined that the Sun was NOT at the center of the Milky Way?

Correct Answer
verified

A collection of gravitationally bound stars,numbering about 100 billion,is most likely a(n) :

Correct Answer
verified

Which component of the Milky Way has the most stars?

Correct Answer
verified

The development of infrared astronomy enabled the discovery of:

Correct Answer
verified

How does the density of stars (measured in stars per cubic parsec) in the Milky Way's bulge compare to that in the Sun's neighborhood?

Correct Answer
verified

Which of the following provides evidence that the Milky Way's halo is an old system?

Correct Answer
verified

Exam 15: Our City of Stars: the Milky Way

According to present observations,how does the Milky Way's black hole compare to those at the center of powerful active galactic nuclei?

Correct AnswerverifiedShow Answer

What does the distribution of gas and dust in the Milky Way tell us about the relative ages of the disk and stellar halo?

Correct AnswerverifiedThe stellar halo lacks gas and...View AnswerShow Answer

Astronomers detect an old star with a velocity perpendicular to the Sun's 1 kpc from Earth.Of which component is it most likely a part?

Correct AnswerverifiedShow Answer

Which of the following is present near the center of the Milky Way?

Correct AnswerverifiedShow Answer

Which of the following astronomers determined that the Sun was NOT at the center of the Milky Way?

Correct AnswerverifiedShow Answer

A collection of gravitationally bound stars,numbering about 100 billion,is most likely a(n) :

Correct AnswerverifiedShow Answer

Which component of the Milky Way has the most stars?

Correct AnswerverifiedShow Answer

The development of infrared astronomy enabled the discovery of:

Correct AnswerverifiedShow Answer

How does the density of stars (measured in stars per cubic parsec) in the Milky Way's bulge compare to that in the Sun's neighborhood?

Correct AnswerverifiedShow Answer

Which of the following provides evidence that the Milky Way's halo is an old system?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified
The stellar halo lacks gas and...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified