Question 1

Giant spirals are the largest galaxies in the Universe.

Accepted Answer

A) True 
 B)False

Question 2

How have elliptical and spiral galaxies developed differently through interactions with other galaxies?

Accepted Answer

Elliptical galaxies are usually found in

Question 3

The velocity dispersion method can be used to find the _______________ of a galaxy.

Accepted Answer

The answer of The velocity dispersion method can be used...

Question 4

Hubble's Law is only effective in measuring the distance to nearby galaxies.

Accepted Answer

A) True 
 B)False

Question 5

The rotation curve of a galaxy is important in determining the galaxy's ____.

Accepted Answer

A)  mass 
B)  age 
C)  luminosity 
D)  type 
E)  diameter 
A)  mass 
B)  age 
C)  luminosity 
D)  type 
E)  diameter

Question 6

At the longest look-back times, we see ____.

Accepted Answer

A)  redshifted irregular galaxies 
B)  redshifted dwarf elliptical galaxies 
C)  redshifted dwarf spiral galaxies 
D)  blueshifted dwarf spiral galaxies 
E)  blueshifted dwarf elliptical galaxies 
A)  redshifted irregular galaxies 
B)  redshifted dwarf elliptical galaxies 
C)  redshifted dwarf spiral galaxies 
D)  blueshifted dwarf spiral galaxies 
E)  blueshifted dwarf elliptical galaxies

Question 7

A supermassive black hole in the center of a galaxy typically represents ____ of the galaxy's total mass.

Accepted Answer

A)  a tiny fraction of a percent 
B)  about a percent 
C)  1-5% 
D)  10% 
E)  50% 
A)  a tiny fraction of a percent 
B)  about a percent 
C)  1-5% 
D)  10% 
E)  50%

Question 8

In general, ____.

Accepted Answer

A)  spiral galaxies are the most common galaxies, and are make up most of the cataloged galaxies 
B)  elliptical galaxies are the most common galaxies, and are make up most of the cataloged galaxies 
C)  most cataloged galaxies are spiral, but dwarf galaxies are the most common 
D)  most cataloged galaxies are elliptical, but spiral galaxies are the most common 
E)  most cataloged galaxies are spiral, but elliptical galaxies are the most common. 
A)  spiral galaxies are the most common galaxies, and are make up most of the cataloged galaxies 
B)  elliptical galaxies are the most common galaxies, and are make up most of the cataloged galaxies 
C)  most cataloged galaxies are spiral, but dwarf galaxies are the most common 
D)  most cataloged galaxies are elliptical, but spiral galaxies are the most common 
E)  most cataloged galaxies are spiral, but elliptical galaxies are the most common.

Question 9

The structure of most galaxies is most apparent using near-infrared images that show the locations of ____.

Accepted Answer

A)  dense molecular clouds 
B)  spiral tracers 
C)  atomic hydrogen clouds 
D)  cool, low-luminosity stars 
E)  hot, high-luminosity stars 
A)  dense molecular clouds 
B)  spiral tracers 
C)  atomic hydrogen clouds 
D)  cool, low-luminosity stars 
E)  hot, high-luminosity stars

Question 10

Because the Hubble constant has a value of 70 km/s/Mpc, a galaxy 50 Mpc away would have a recession velocity of _______________ km/s. (Round your answer to the nearest 1 km/s).

Accepted Answer

The answer of Because the Hubble constant has a value...

Question 11

When spiral nebulae were first discovered, astronomers quickly identified them as distant groupings of stars.

Accepted Answer

A) True 
 B)False

Question 12

Galactic _______________ describes the process of a large galaxy absorbing a smaller one.

Accepted Answer

The answer of Galactic _______________ describes the process of a...

Question 13

Spiral galaxies are mostly found ____.

Accepted Answer

A)  in poor clusters where their disk structure will not be disrupted 
B)  isolated in space with only small dwarf galaxies nearby 
C)  in the center of rich clusters where tidal forces can support their arm structure 
D)  in clusters with hot intergalactic gas helping support star formation 
E)  orbiting giant elliptical galaxies in a galactic binary system 
A)  in poor clusters where their disk structure will not be disrupted 
B)  isolated in space with only small dwarf galaxies nearby 
C)  in the center of rich clusters where tidal forces can support their arm structure 
D)  in clusters with hot intergalactic gas helping support star formation 
E)  orbiting giant elliptical galaxies in a galactic binary system

Question 14

The Milky Way and other spiral galaxies ____.

Accepted Answer

A)  must have formed recently, because they contain young stars 
B)  formed spiral arms as the result of major collisions with other galaxies 
C)  created their disks through the process of galactic cannibalism 
D)  must be very old because they contain so much gas and dust 
E)  cannot maintain their disk structure if they suffer a major collision 
A)  must have formed recently, because they contain young stars 
B)  formed spiral arms as the result of major collisions with other galaxies 
C)  created their disks through the process of galactic cannibalism 
D)  must be very old because they contain so much gas and dust 
E)  cannot maintain their disk structure if they suffer a major collision

Question 15

Because the Hubble constant equals 70 km/s/Mpc, a galaxy with a recession velocity of 4,900 km/s would be a distance of ____ Mpc from Earth.

Accepted Answer

A)  0.014 
B)  70 
C)  4930 
D)  4970 
E)  343,000 
A)  0.014 
B)  70 
C)  4930 
D)  4970 
E)  343,000

Question 16

Gravitational _______________ can be used to detect dark matter.

Accepted Answer

The answer of Gravitational _______________ can be used to detect...

Question 17

Compared to other spiral galaxies, the Milky Way is ____.

Accepted Answer

A)  comparable to the smallest and dimmest spirals known 
B)  smaller and dimmer than most spirals 
C)  very average in size and luminosity 
D)  larger and brighter than most spirals 
E)  comparable to the largest and brightest spirals known 
A)  comparable to the smallest and dimmest spirals known 
B)  smaller and dimmer than most spirals 
C)  very average in size and luminosity 
D)  larger and brighter than most spirals 
E)  comparable to the largest and brightest spirals known

Question 18

The _______________ time is the amount of time it took light to travel from a celestial object to Earth.

Accepted Answer

The answer of The _______________ time is the amount of...

Question 19

The range of diameters and luminosities displayed by elliptical galaxies is ____.

Accepted Answer

A)  similar to the range of spirals, and smaller than spiral galaxies on average 
B)  similar to the range of spirals, and about the same as spiral galaxies on average 
C)  similar to the range of spirals, and larger than spiral galaxies on average 
D)  wider than the range for spirals, extending to much larger sizes than spiral galaxies 
E)  wider than the range for spirals, extending to much smaller sizes than spiral galaxies 
A)  similar to the range of spirals, and smaller than spiral galaxies on average 
B)  similar to the range of spirals, and about the same as spiral galaxies on average 
C)  similar to the range of spirals, and larger than spiral galaxies on average 
D)  wider than the range for spirals, extending to much larger sizes than spiral galaxies 
E)  wider than the range for spirals, extending to much smaller sizes than spiral galaxies

Question 20

Spiral and irregular galaxies have active star formation.

Accepted Answer

A) True 
 B)False

Exam 16: Galaxies

Giant spirals are the largest galaxies in the Universe.

How have elliptical and spiral galaxies developed differently through interactions with other galaxies?

The velocity dispersion method can be used to find the _______________ of a galaxy.

Hubble's Law is only effective in measuring the distance to nearby galaxies.

The rotation curve of a galaxy is important in determining the galaxy's ____.

At the longest look-back times, we see ____.

A supermassive black hole in the center of a galaxy typically represents ____ of the galaxy's total mass.

In general, ____.

The structure of most galaxies is most apparent using near-infrared images that show the locations of ____.

Because the Hubble constant has a value of 70 km/s/Mpc, a galaxy 50 Mpc away would have a recession velocity of _______________ km/s. (Round your answer to the nearest 1 km/s).

When spiral nebulae were first discovered, astronomers quickly identified them as distant groupings of stars.

Galactic _______________ describes the process of a large galaxy absorbing a smaller one.

Spiral galaxies are mostly found ____.

The Milky Way and other spiral galaxies ____.

Because the Hubble constant equals 70 km/s/Mpc, a galaxy with a recession velocity of 4,900 km/s would be a distance of ____ Mpc from Earth.

Gravitational _______________ can be used to detect dark matter.

Compared to other spiral galaxies, the Milky Way is ____.

The _______________ time is the amount of time it took light to travel from a celestial object to Earth.

The range of diameters and luminosities displayed by elliptical galaxies is ____.

Spiral and irregular galaxies have active star formation.

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

The Milky Way Galaxy

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

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