Question 1

Shapley found the globular clusters were strongly concentrated toward Sagittarius.

Accepted Answer

A) True 
 B)False

Question 2

Why do we believe there is dark matter?

Accepted Answer

When we use the Keplerian equation to de

Question 3

Give the dimensions and shape of the Galactic disk.

Accepted Answer

The entire disk is about 30 kp

Question 4

A star in the instability strip of the H- R diagram would

Accepted Answer

A)  explode as a Type I supernova. 
B)  vary in both temperature and radius. 
C)  vary in temperature and radius, but not in brightness. 
D)  vary in brightness with an irregular pattern. 
E)  vary in temperature and brightness, but not in radius. 
A)  explode as a Type I supernova. 
B)  vary in both temperature and radius. 
C)  vary in temperature and radius, but not in brightness. 
D)  vary in brightness with an irregular pattern. 
E)  vary in temperature and brightness, but not in radius.

Question 5

How does gravitational lensing let us find massive dark objects?

Accepted Answer

When a black hole or brown dwarf passes

Question 6

Describe our location in the Milky Way.

Accepted Answer

We lie in a spiral arm about 3

Question 7

Around us in the galactic plane, we find stars of a variety of ages and compositions.

Accepted Answer

A) True 
 B)False

Question 8

Density waves may explain

Accepted Answer

A)  the lack of blue stars in the halo. 
B)  the random orbits of halo stars. 
C)  the large number of open clusters in the halo. 
D)  the density of red stars in the bulge. 
E)  the spiral arm structure of the Galaxy. 
A)  the lack of blue stars in the halo. 
B)  the random orbits of halo stars. 
C)  the large number of open clusters in the halo. 
D)  the density of red stars in the bulge. 
E)  the spiral arm structure of the Galaxy.

Question 9

Most of the hot, young blue stars lie in the of our Galaxy.

Accepted Answer

A)  central bar 
B)  halo 
C)  spiral arms 
D)  globular clusters 
E)  bulge 
A)  central bar 
B)  halo 
C)  spiral arms 
D)  globular clusters 
E)  bulge

Question 10

The bending of distant starlight by a closer object, resulting in a temporary brightening of the star, is called _.

Accepted Answer

gravitatio

Question 11

The is the spherical outer portion of the Galaxy, including the orbits of the globular clusters and most dark matter.

Accepted Answer

The answer of The is the spherical outer portion of...

Question 12

What advantage do radio astronomers have over optical ones in mapping the entire Milky Way?

Accepted Answer

Dust clouds block our view of

Question 13

Why were globular clusters so vital to Harlow Shapley's success?

Accepted Answer

Globular clusters lie in the H

Question 14

To the outer edge of the Galaxy, the rotation curve finds objects moving than Kepler's Laws would lead us to expect.

Accepted Answer

The answer of To the outer edge of the Galaxy,...

Question 15

Detailed measurements of the disk and central bulge region of our Galaxy suggest our Milky Way is a

Accepted Answer

A)  quasar. 
B)  very flat elliptical galaxy. 
C)  barred spiral galaxy. 
D)  normal spiral galaxy. 
E)  very dusty irregular galaxy. 
A)  quasar. 
B)  very flat elliptical galaxy. 
C)  barred spiral galaxy. 
D)  normal spiral galaxy. 
E)  very dusty irregular galaxy.

Question 16

Why was Herschel's strategy for mapping our Galaxy flawed?

Accepted Answer

A)  He used radio telescopes that didn't give enough resolution. 
B)  He assumed Earth was at the extreme edge of the Galaxy. 
C)  He used globular clusters, lying above the dust in the disc. 
D)  His infrared telescopes couldn't penetrate the dust clouds. 
E)  He relied on visual wavelengths, which are obscured by dust. 
A)  He used radio telescopes that didn't give enough resolution. 
B)  He assumed Earth was at the extreme edge of the Galaxy. 
C)  He used globular clusters, lying above the dust in the disc. 
D)  His infrared telescopes couldn't penetrate the dust clouds. 
E)  He relied on visual wavelengths, which are obscured by dust.

Question 17

The distribution of Population II stars and globular clusters shows the Galaxy was more
in shape when it formed than it is now.

Accepted Answer

The answer of The distribution of Population II stars and...

Question 18

Most of the mass of the Galaxy lies in the _.

Accepted Answer

The answer of Most of the mass of the Galaxy...

Question 19

William Herschel made the first map of the Galaxy about 200 years ago.

Accepted Answer

A) True 
 B)False

Question 20

The globular star clusters are the most obvious examples of Population II around us.

Accepted Answer

A) True 
 B)False

Shapley found the globular clusters were strongly concentrated toward Sagittarius.

Why do we believe there is dark matter?

Give the dimensions and shape of the Galactic disk.

A star in the instability strip of the H- R diagram would

How does gravitational lensing let us find massive dark objects?

Describe our location in the Milky Way.

Around us in the galactic plane, we find stars of a variety of ages and compositions.

Density waves may explain

Most of the hot, young blue stars lie in the of our Galaxy.

The bending of distant starlight by a closer object, resulting in a temporary brightening of the star, is called _.

The is the spherical outer portion of the Galaxy, including the orbits of the globular clusters and most dark matter.

What advantage do radio astronomers have over optical ones in mapping the entire Milky Way?

Why were globular clusters so vital to Harlow Shapley's success?

To the outer edge of the Galaxy, the rotation curve finds objects moving than Kepler's Laws would lead us to expect.

Detailed measurements of the disk and central bulge region of our Galaxy suggest our Milky Way is a

Why was Herschel's strategy for mapping our Galaxy flawed?

The distribution of Population II stars and globular clusters shows the Galaxy was more in shape when it formed than it is now.

Most of the mass of the Galaxy lies in the _.

William Herschel made the first map of the Galaxy about 200 years ago.

The globular star clusters are the most obvious examples of Population II around us.

Charting the Heavens: the Foundations of Astronomy

The Copernican Revolution: the Birth of Modern Science

Light and Matter: the Inner Workings of the Cosmos

Telescopes: the Tools of Astronomy

The Solar System: Interplanetary Matter and the Birth of the Planets

Earth and Its Moon: Our Cosmic Backyard

The Terrestrial Planets: a Study in Contrasts

The Jovian Planets: Giants of the Solar System

Moons, Rings, and Plutoids: Small Worlds Among Giants

The Sun: Our Parent Star

Measuring the Stars: Giants, Dwarfs, and the Main Sequence

The Interstellar Medium: Star Formation in the Milky Way

Stellar Evolution: the Lives and Deaths of Stars

Neutron Stars and Black Holes: Strange States of Matter

Normal and Active Galaxies: Building Blocks of the Universe

Hubbles Law and Dark Matter: the Large-Scale Structure of the Cosmos

Cosmology: the Big Bang and the Fate of the Universe

Life in the Universe: Are We Alone

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Exam 15: The Milky Way Galaxy: a Spiral in Space

Shapley found the globular clusters were strongly concentrated toward Sagittarius.

Why do we believe there is dark matter?

Give the dimensions and shape of the Galactic disk.

A star in the instability strip of the H- R diagram would

How does gravitational lensing let us find massive dark objects?

Describe our location in the Milky Way.

Around us in the galactic plane, we find stars of a variety of ages and compositions.

Density waves may explain

Most of the hot, young blue stars lie in the of our Galaxy.

The bending of distant starlight by a closer object, resulting in a temporary brightening of the star, is called _.

The is the spherical outer portion of the Galaxy, including the orbits of the globular clusters and most dark matter.

What advantage do radio astronomers have over optical ones in mapping the entire Milky Way?

Why were globular clusters so vital to Harlow Shapley's success?

To the outer edge of the Galaxy, the rotation curve finds objects moving than Kepler's Laws would lead us to expect.

Detailed measurements of the disk and central bulge region of our Galaxy suggest our Milky Way is a

Why was Herschel's strategy for mapping our Galaxy flawed?

The distribution of Population II stars and globular clusters shows the Galaxy was more in shape when it formed than it is now.

Most of the mass of the Galaxy lies in the _.

William Herschel made the first map of the Galaxy about 200 years ago.

The globular star clusters are the most obvious examples of Population II around us.

Charting the Heavens: the Foundations of Astronomy

The Copernican Revolution: the Birth of Modern Science

Light and Matter: the Inner Workings of the Cosmos

Telescopes: the Tools of Astronomy

The Solar System: Interplanetary Matter and the Birth of the Planets

Earth and Its Moon: Our Cosmic Backyard

The Terrestrial Planets: a Study in Contrasts

The Jovian Planets: Giants of the Solar System

Moons, Rings, and Plutoids: Small Worlds Among Giants

The Sun: Our Parent Star

Measuring the Stars: Giants, Dwarfs, and the Main Sequence

The Interstellar Medium: Star Formation in the Milky Way

Stellar Evolution: the Lives and Deaths of Stars

Neutron Stars and Black Holes: Strange States of Matter

Normal and Active Galaxies: Building Blocks of the Universe

Hubbles Law and Dark Matter: the Large-Scale Structure of the Cosmos

Cosmology: the Big Bang and the Fate of the Universe

Life in the Universe: Are We Alone

Filters