Question 1

How did Harlow Shapley determine where the center of the galaxy lies

Accepted Answer

A) He plotted the distribution of open clusters. 
B) He plotted the distribution of globular clusters. 
C) He made star counts in every direction of the galactic disk. 
D) He measured the amount of dust obscuration in every direction of the galactic disk. 
A) He plotted the distribution of open clusters. 
B) He plotted the distribution of globular clusters. 
C) He made star counts in every direction of the galactic disk. 
D) He measured the amount of dust obscuration in every direction of the galactic disk.

Question 2

In the diagram below, the approximate absolute magnitude of a Type II Cepheid with a period of 30 days is ____________________.

Accepted Answer

The answer of In the diagram below, the approximate absolute...

Question 3

The blue color in this visual wavelength image indicates

Accepted Answer

A) globular clusters. 
B) halo stars. 
C) young stars. 
D) cool stars. 
A) globular clusters. 
B) halo stars. 
C) young stars. 
D) cool stars.

Question 4

Population II stars 
I.are primarily found in the disk of the galaxy.
II.contain more heavy metals than population I stars.
III.are primarily old low-mass stars.
IV.are located in globular clusters.

Accepted Answer

A) III & IV 
B) I & II 
C) II 
D) IV 
E) I, II, & III 
A) III & IV 
B) I & II 
C) II 
D) IV 
E) I, II, & III

Question 5

The disk of the Milky Way is approximately 20,000 ly in diameter.

Accepted Answer

A) True 
 B)False

Question 6

The blue shaded region shown in the H-R diagram above is known as the Cepheid variable strip.

Accepted Answer

A) True 
 B)False

Question 7

More massive stars are _________ luminous and __________ than less massive stars, thus they pulsate _____________.

Accepted Answer

A) less, smaller, faster 
B) more, slower, larger 
C) more, larger, slower 
D) less, faster, smaller 
A) less, smaller, faster 
B) more, slower, larger 
C) more, larger, slower 
D) less, faster, smaller

Question 8

Describe the central bulge of our galaxy.

Accepted Answer

It is a flattened cloud of billions of s

Question 9

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 10

Which mass star experiences more pulsations than the others shown at the time the systems were plotted in the following H-R diagram

Accepted Answer

A) 9-solar-mass star 
B) 5-solar-mass star 
C) 3-solar-mass star 
D) RR Lyrae 
A) 9-solar-mass star 
B) 5-solar-mass star 
C) 3-solar-mass star 
D) RR Lyrae

Question 11

Population II stars contain more metals than Population I stars.

Accepted Answer

A) True 
 B)False

Question 12

-You observe a variable star and find its period to be about 6 days and its MV to be -3.4. Which object best describes the system or type of system you are observing using the above graph

Accepted Answer

A) RR Lyrae 
B) Type II Cepheids 
C) Type I Cepheids 
D) Delta Cephei 
A) RR Lyrae 
B) Type II Cepheids 
C) Type I Cepheids 
D) Delta Cephei

Question 13

O and B stars are examples of ________________ that are used to outline the arms in a galaxy like the Milky Way galaxy.

Accepted Answer

The answer of O and B stars are examples of...

Question 14

The Herschels' grindstone model of the Milky Way star system was too small because

Accepted Answer

A) they did not count the brightest stars. 
B) they did not study the southern sky. 
C) they did not have large enough telescopes. 
D) they only observed stars in the disk of the galaxy and not the halo. 
E) they did not know about interstellar dust clouds. 
A) they did not count the brightest stars. 
B) they did not study the southern sky. 
C) they did not have large enough telescopes. 
D) they only observed stars in the disk of the galaxy and not the halo. 
E) they did not know about interstellar dust clouds.

Question 15

The first stars to form in our galaxy

Accepted Answer

A) had circular orbits. 
B) had highly elongated elliptical orbits. 
C) were population I stars. 
D) all had orbits in the same plane. 
E) formed the galactic clusters we see today. 
A) had circular orbits. 
B) had highly elongated elliptical orbits. 
C) were population I stars. 
D) all had orbits in the same plane. 
E) formed the galactic clusters we see today.

Question 16

Compare and contrast the properties of disk and halo stars.

Accepted Answer

Most of the stars in the disk are middle

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

The ____________________ of the galaxy contains population I stars, open clusters, and gas clouds.

Accepted Answer

The answer of The ____________________ of the galaxy contains population...

Question 19

_______________ is the rate at which a star moves across the sky.

Accepted Answer

The answer of _______________ is the rate at which a...

Question 20

M dwarf main-sequence stars pass through the instability strip as shown above.

Accepted Answer

A) True 
 B)False

How did Harlow Shapley determine where the center of the galaxy lies

In the diagram below, the approximate absolute magnitude of a Type II Cepheid with a period of 30 days is ____________________.

The blue color in this visual wavelength image indicates

Population II stars I.are primarily found in the disk of the galaxy. II.contain more heavy metals than population I stars. III.are primarily old low-mass stars. IV.are located in globular clusters.

The disk of the Milky Way is approximately 20,000 ly in diameter.

The blue shaded region shown in the H-R diagram above is known as the Cepheid variable strip.

More massive stars are _ luminous and than less massive stars, thus they pulsate _______.

Describe the central bulge of our galaxy.

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

Which mass star experiences more pulsations than the others shown at the time the systems were plotted in the following H-R diagram

Population II stars contain more metals than Population I stars.

-You observe a variable star and find its period to be about 6 days and its MV to be -3.4. Which object best describes the system or type of system you are observing using the above graph

O and B stars are examples of ________________ that are used to outline the arms in a galaxy like the Milky Way galaxy.

The Herschels' grindstone model of the Milky Way star system was too small because

The first stars to form in our galaxy

Compare and contrast the properties of disk and halo stars.

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

The ____________________ of the galaxy contains population I stars, open clusters, and gas clouds.

_______________ is the rate at which a star moves across the sky.

M dwarf main-sequence stars pass through the instability strip as shown above.

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

The Origin of the Solar System

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

How did Harlow Shapley determine where the center of the galaxy lies

In the diagram below, the approximate absolute magnitude of a Type II Cepheid with a period of 30 days is ____________________.

The blue color in this visual wavelength image indicates

Population II stars I.are primarily found in the disk of the galaxy. II.contain more heavy metals than population I stars. III.are primarily old low-mass stars. IV.are located in globular clusters.

The disk of the Milky Way is approximately 20,000 ly in diameter.

The blue shaded region shown in the H-R diagram above is known as the Cepheid variable strip.

More massive stars are _________ luminous and __________ than less massive stars, thus they pulsate _____________.

Describe the central bulge of our galaxy.

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

Which mass star experiences more pulsations than the others shown at the time the systems were plotted in the following H-R diagram

Population II stars contain more metals than Population I stars.

-You observe a variable star and find its period to be about 6 days and its MV to be -3.4. Which object best describes the system or type of system you are observing using the above graph

O and B stars are examples of ________________ that are used to outline the arms in a galaxy like the Milky Way galaxy.

The Herschels' grindstone model of the Milky Way star system was too small because

The first stars to form in our galaxy

Compare and contrast the properties of disk and halo stars.

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

The ____________________ of the galaxy contains population I stars, open clusters, and gas clouds.

_______________ is the rate at which a star moves across the sky.

M dwarf main-sequence stars pass through the instability strip as shown above.

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

The Origin of the Solar System

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

More massive stars are _ luminous and than less massive stars, thus they pulsate _______.