Question 1

When you plot the position of sun-like stars, you will find that ___.

Accepted Answer

A)  almost all sun-like stars are found in spiral arms 
B)  sun-like stars are found in and out of spiral arms 
C)  sun-like stars are left behind by the spiral arms that created them 
D)  sun-like stars are only found in the outer 2/3 of the disk 
E)  sun-like stars are only found in the inner 2/3 of the disk 
A)  almost all sun-like stars are found in spiral arms 
B)  sun-like stars are found in and out of spiral arms 
C)  sun-like stars are left behind by the spiral arms that created them 
D)  sun-like stars are only found in the outer 2/3 of the disk 
E)  sun-like stars are only found in the inner 2/3 of the disk

Question 2

Stars that formed in the very early stages of our galaxy's formation have high amounts of "metals."

Accepted Answer

A) True 
 B)False

Question 3

Stars at different distances from the galactic center revolve with different periods, an effect called _______________ rotation.

Accepted Answer

The answer of Stars at different distances from the galactic...

Question 4

Population I stars are younger than Population II stars.

Accepted Answer

A) True 
 B)False

Question 5

The center of the Milky Way galaxy is in the direction of the constellation ____.

Accepted Answer

A)  Sagittarius 
B)  Scorpius 
C)  Orion 
D)  Perseus 
E)  Andromeda 
A)  Sagittarius 
B)  Scorpius 
C)  Orion 
D)  Perseus 
E)  Andromeda

Question 6

The central bulge and the galactic disk of the Milky Way are often referred to as its spherical component.

Accepted Answer

A) True 
 B)False

Question 7

The following objects are found in a spiral arm of a galaxy. Which is the exception?

Accepted Answer

A)  population II stars 
B)  OB associations 
C)  emission nebulae 
D)  population I stars 
E)  clouds of gas and dust 
A)  population II stars 
B)  OB associations 
C)  emission nebulae 
D)  population I stars 
E)  clouds of gas and dust

Question 8

" Spurs" are probably the result of ____.

Accepted Answer

A)  self-sustaining star formation 
B)  spiral density waves 
C)  differential rotation 
D)  the central galactic bar 
E)  the short lifetime of O stars 
A)  self-sustaining star formation 
B)  spiral density waves 
C)  differential rotation 
D)  the central galactic bar 
E)  the short lifetime of O stars

Question 9

Discuss the evidence that supports the theory that there is a supermassive black hole at the center of our galaxy.

Accepted Answer

There is an intense source of radio ener

Question 10

The center of our galaxy contains a very intense source of radio and X-ray radiation named Sgr A*. What is it about this source that supports the idea that the radiation comes from a black hole?

Accepted Answer

A)  The radiation is strongly blueshifted, indicating that the object is collapsing. 
B)  The radiation is strongly redshifted indicating that the object is growing. 
C)  The radiation is coming from an incredibly small object. 
D)  Radio waves can only be produced by matter orbiting a black hole. 
E)  Only radiation from a black hole could penetrate the giant molecular clouds between Sgr A* and Earth. 
A)  The radiation is strongly blueshifted, indicating that the object is collapsing. 
B)  The radiation is strongly redshifted indicating that the object is growing. 
C)  The radiation is coming from an incredibly small object. 
D)  Radio waves can only be produced by matter orbiting a black hole. 
E)  Only radiation from a black hole could penetrate the giant molecular clouds between Sgr A* and Earth.

Question 11

Which statement about stellar populations is correct?

Accepted Answer

A)  Population I stars are found in the disk and halo; Population II stars are found in the bulge. 
B)  Population I stars are found in the halo; Population II stars are found in the disk and bulge. 
C)  Population I stars are found in the disk; Population II stars are found in the bulge and halo. 
D)  Population II stars are found in the disk; Population I stars are found in the bulge and halo. 
E)  Population I stars are found in the bulge; Population II stars are found in the disk and halo. 
A)  Population I stars are found in the disk and halo; Population II stars are found in the bulge. 
B)  Population I stars are found in the halo; Population II stars are found in the disk and bulge. 
C)  Population I stars are found in the disk; Population II stars are found in the bulge and halo. 
D)  Population II stars are found in the disk; Population I stars are found in the bulge and halo. 
E)  Population I stars are found in the bulge; Population II stars are found in the disk and halo.

Question 12

Figure 12-14(for the following questions)
The accompanying graph above clearly shows that ____.

Accepted Answer

A)  Type I Cepheid variables are always brighter than Type II Cepheids 
B)  Type II Cepheid variables always have shorter pulsation periods than Type I Cepheids 
C)  Type I Cepheids are always more distant than Type II Cepheids 
D)  RR Lyrae stars can have longer pulsation periods than Cepheid variables 
E)  RR Lyrae stars are always dimmer than Cepheid variables. 
A)  Type I Cepheid variables are always brighter than Type II Cepheids 
B)  Type II Cepheid variables always have shorter pulsation periods than Type I Cepheids 
C)  Type I Cepheids are always more distant than Type II Cepheids 
D)  RR Lyrae stars can have longer pulsation periods than Cepheid variables 
E)  RR Lyrae stars are always dimmer than Cepheid variables.

When you plot the position of sun-like stars, you will find that ___.

Stars that formed in the very early stages of our galaxy's formation have high amounts of "metals."

Stars at different distances from the galactic center revolve with different periods, an effect called _______________ rotation.

Population I stars are younger than Population II stars.

The center of the Milky Way galaxy is in the direction of the constellation ____.

The central bulge and the galactic disk of the Milky Way are often referred to as its spherical component.

The following objects are found in a spiral arm of a galaxy. Which is the exception?

" Spurs" are probably the result of ____.

Discuss the evidence that supports the theory that there is a supermassive black hole at the center of our galaxy.

The center of our galaxy contains a very intense source of radio and X-ray radiation named Sgr A*. What is it about this source that supports the idea that the radiation comes from a black hole?

Which statement about stellar populations is correct?

Figure 12-14(for the following questions) The accompanying graph above clearly shows that ____.

Here and Now

A Users Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Gravity

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Interstellar Medium

Formation and Structure of Stars

Stellar Evolution

Deaths of Stars

Neutron Stars and Black Holes

Galaxies

Supermassive Black Holes and Active Galaxies

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

Earth the Active Planet

The Moon and Mercury

Venus and Mars

Jupiter and Saturn

Uranus Neptune Pluto and the Kuiper Belt

Meteorites Asteroids and Comets

Astrobiology

Filters

Exam 15: The Milky Way Galaxy

When you plot the position of sun-like stars, you will find that ___.

Stars that formed in the very early stages of our galaxy's formation have high amounts of "metals."

Stars at different distances from the galactic center revolve with different periods, an effect called _______________ rotation.

Population I stars are younger than Population II stars.

The center of the Milky Way galaxy is in the direction of the constellation ____.

The central bulge and the galactic disk of the Milky Way are often referred to as its spherical component.

The following objects are found in a spiral arm of a galaxy. Which is the exception?

" Spurs" are probably the result of ____.

Discuss the evidence that supports the theory that there is a supermassive black hole at the center of our galaxy.

The center of our galaxy contains a very intense source of radio and X-ray radiation named Sgr A*. What is it about this source that supports the idea that the radiation comes from a black hole?

Which statement about stellar populations is correct?

Figure 12-14(for the following questions) The accompanying graph above clearly shows that ____.

Here and Now

A Users Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Gravity

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Interstellar Medium

Formation and Structure of Stars

Stellar Evolution

Deaths of Stars

Neutron Stars and Black Holes

Galaxies

Supermassive Black Holes and Active Galaxies

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

Earth the Active Planet

The Moon and Mercury

Venus and Mars

Jupiter and Saturn

Uranus Neptune Pluto and the Kuiper Belt

Meteorites Asteroids and Comets

Astrobiology

Filters