Question 1

The period- luminosity relation is critical in finding distances with

Accepted Answer

A)  Cepheid variables. 
B)  trigonometric parallaxes. 
C)  RR Lyrae stars. 
D)  spectroscopic parallaxes. 
E)  pulsars. 
A)  Cepheid variables. 
B)  trigonometric parallaxes. 
C)  RR Lyrae stars. 
D)  spectroscopic parallaxes. 
E)  pulsars.

Question 2

Which of these variable stars would be classified as a Cepheid?

Accepted Answer

A)  an F giant with a period of 14 years 
B)  a G giant with a period of 14 hours 
C)  an M supergiant with a period of 140 days 
D)  a B supergiant with a period of 0.14 days 
E)  a K giant with a period of 14 days 
A)  an F giant with a period of 14 years 
B)  a G giant with a period of 14 hours 
C)  an M supergiant with a period of 140 days 
D)  a B supergiant with a period of 0.14 days 
E)  a K giant with a period of 14 days

Question 3

Optically mapping the Milky Way is made very difficult because of in the disk.

Accepted Answer

The answer of Optically mapping the Milky Way is made...

Question 4

In the formation of our Galaxy, the _ _ formed first.

Accepted Answer

A)  galactic disk 
B)  planetary nebulae 
C)  galactic center 
D)  globular clusters 
E)  spiral arms 
A)  galactic disk 
B)  planetary nebulae 
C)  galactic center 
D)  globular clusters 
E)  spiral arms

Question 5

Why do we believe a black hole lies toward Sagittarius?

Accepted Answer

A large amount of activity is present. T

Question 6

Most of the dark matter in the Galaxy lies in the disk and galactic center.

Accepted Answer

A) True 
 B)False

Question 7

The distribution of stars in the Galactic Bulge reminds us of the distribution of objects in the solar system's _ Belt beyond Neptune.

Accepted Answer

A)  Kuiper 
B)  Kepler 
C)  Oort 
D)  Shapley 
E)  Hubble 
A)  Kuiper 
B)  Kepler 
C)  Oort 
D)  Shapley 
E)  Hubble

Question 8

The three main components of the Milky Way galaxy are the _, , and
.

Accepted Answer

The answer of The three main components of the Milky...

Question 9

The Earth lies close to the center of the Galaxy.

Accepted Answer

A) True 
 B)False

Question 10

Like the RR Lyrae stars, Cepheids are all similar in luminosity, hence their use in measuring stellar distances.

Accepted Answer

A) True 
 B)False

Question 11

At the center of our Galaxy lies

Accepted Answer

A)  the largest of all globular clusters. 
B)  an intensely bright visible superstar. 
C)  a huge emission nebula. 
D)  a black hole of millions of solar masses. 
E)  a quasar. 
A)  the largest of all globular clusters. 
B)  an intensely bright visible superstar. 
C)  a huge emission nebula. 
D)  a black hole of millions of solar masses. 
E)  a quasar.

Question 12

Shapley's measurements of the distances to open clusters vastly revised our understanding of our position in the Galaxy.

Accepted Answer

A) True 
 B)False

Question 13

Almost all the stars we see around us with the naked eye are relatively in age.

Accepted Answer

The answer of Almost all the stars we see around...

Question 14

21- cm radio waves allow us to map the distribution of hydrogen in spiral arms on the opposite side of the Galaxy.

Accepted Answer

A) True 
 B)False

Question 15

In our location in the Milky Way, the galactic disk is only about ly thick.

Accepted Answer

A)  10 
B)  100 
C)  1,000 
D)  10,000 
E)  100,000 
A)  10 
B)  100 
C)  1,000 
D)  10,000 
E)  100,000

Question 16

The tidal streams mapped in the Halo are similar to _ _ in our solar system.

Accepted Answer

A)  meteor swarms in old comet orbits 
B)  the rings around the jovians 
C)  the moons orbiting planets 
D)  the asteroid belt between Mars and Jupiter 
E)  the solar wind 
A)  meteor swarms in old comet orbits 
B)  the rings around the jovians 
C)  the moons orbiting planets 
D)  the asteroid belt between Mars and Jupiter 
E)  the solar wind

Question 17

Like our solar system, the whole Milky Way is about five billion years old.

Accepted Answer

A) True 
 B)False

Question 18

The presence of planets orbiting it shows us the Sun belongs to Population I.

Accepted Answer

The answer of The presence of planets orbiting it shows...

Question 19

Counting only the material between us and the galactic Center, we measure a mass of
billion Suns.

Accepted Answer

The answer of Counting only the material between us and...

Question 20

The star Arcturus shows a large proper motion, almost perpendicular to the galactic plane. What Population might we assume it belongs to, and why?

Accepted Answer

It might be an older Populatio

The period- luminosity relation is critical in finding distances with

Which of these variable stars would be classified as a Cepheid?

Optically mapping the Milky Way is made very difficult because of in the disk.

In the formation of our Galaxy, the _ _ formed first.

Why do we believe a black hole lies toward Sagittarius?

Most of the dark matter in the Galaxy lies in the disk and galactic center.

The distribution of stars in the Galactic Bulge reminds us of the distribution of objects in the solar system's _ Belt beyond Neptune.

The three main components of the Milky Way galaxy are the _, , and .

The Earth lies close to the center of the Galaxy.

Like the RR Lyrae stars, Cepheids are all similar in luminosity, hence their use in measuring stellar distances.

At the center of our Galaxy lies

Shapley's measurements of the distances to open clusters vastly revised our understanding of our position in the Galaxy.

Almost all the stars we see around us with the naked eye are relatively in age.

21- cm radio waves allow us to map the distribution of hydrogen in spiral arms on the opposite side of the Galaxy.

In our location in the Milky Way, the galactic disk is only about ly thick.

The tidal streams mapped in the Halo are similar to _ _ in our solar system.

Like our solar system, the whole Milky Way is about five billion years old.

The presence of planets orbiting it shows us the Sun belongs to Population I.

Counting only the material between us and the galactic Center, we measure a mass of billion Suns.

The star Arcturus shows a large proper motion, almost perpendicular to the galactic plane. What Population might we assume it belongs to, and why?

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

The period- luminosity relation is critical in finding distances with

Which of these variable stars would be classified as a Cepheid?

Optically mapping the Milky Way is made very difficult because of in the disk.

In the formation of our Galaxy, the _ _ formed first.

Why do we believe a black hole lies toward Sagittarius?

Most of the dark matter in the Galaxy lies in the disk and galactic center.

The distribution of stars in the Galactic Bulge reminds us of the distribution of objects in the solar system's _ Belt beyond Neptune.

The three main components of the Milky Way galaxy are the _, , and .

The Earth lies close to the center of the Galaxy.

Like the RR Lyrae stars, Cepheids are all similar in luminosity, hence their use in measuring stellar distances.

At the center of our Galaxy lies

Shapley's measurements of the distances to open clusters vastly revised our understanding of our position in the Galaxy.

Almost all the stars we see around us with the naked eye are relatively in age.

21- cm radio waves allow us to map the distribution of hydrogen in spiral arms on the opposite side of the Galaxy.

In our location in the Milky Way, the galactic disk is only about ly thick.

The tidal streams mapped in the Halo are similar to _ _ in our solar system.

Like our solar system, the whole Milky Way is about five billion years old.

The presence of planets orbiting it shows us the Sun belongs to Population I.

Counting only the material between us and the galactic Center, we measure a mass of billion Suns.

The star Arcturus shows a large proper motion, almost perpendicular to the galactic plane. What Population might we assume it belongs to, and why?

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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