Question 1

_____________ galaxies have a definite disk component, but contain no evidence of spiral pattern, few hot young stars, and little gas and dust.

Accepted Answer

The answer of _____________ galaxies have a definite disk component,...

Question 2

What evidence do we have that large galaxies cannibalize small galaxies?

Accepted Answer

​ 
Giant elliptical  galaxies

Question 3

For a galaxy to be active, the supermassive black hole needs to have matter flow into it.

Accepted Answer

A) True 
 B)False

Question 4

Measuring the Doppler shift of material at various distances from the center of a galaxy can be used to construct a(n) ________________ for that galaxy.

Accepted Answer

The answer of Measuring the Doppler shift of material at...

Question 5

A mega-parsec (Mpc) is equivalent to

Accepted Answer

A)  3.26 light-years. 
B)  206,265 light years. 
C)  1,000,000 light years 
D)  3,260,000 light-years. 
E)  the diameter of the Milky Way galaxy. 
A)  3.26 light-years. 
B)  206,265 light years. 
C)  1,000,000 light years 
D)  3,260,000 light-years. 
E)  the diameter of the Milky Way galaxy.

Question 6

Most galaxies appear to be

Accepted Answer

A)  composed of one star and seven planets. 
B)  inside our Milky Way. 
C)  located on the Earth. 
D)  moving toward us. 
E)  moving away from us. 
A)  composed of one star and seven planets. 
B)  inside our Milky Way. 
C)  located on the Earth. 
D)  moving toward us. 
E)  moving away from us.

Question 7

The units on the Hubble constant are ____________________, as listed in this chapter.

Accepted Answer

The answer of The units on the Hubble constant are...

Question 8

Due to the extremely rapid orbital velocities of material near the center of many galaxies, these galaxies are believed to contain _______________ at their centers.

Accepted Answer

a supermas

Question 9

A ___________ generally contains well over 1000 galaxies and is quite dense. They often contain many giant elliptical galaxies.

Accepted Answer

A)  local group 
B)  poor cluster 
C)  rich cluster 
D)  tidal tail 
E)  quasar 
A)  local group 
B)  poor cluster 
C)  rich cluster 
D)  tidal tail 
E)  quasar

Question 10

The Milky Way galaxy is part of

Accepted Answer

A)  the Virgo cluster. 
B)  the Large Magellanic Cloud. 
C)  the Small Magellanic Cloud. 
D)  the Local Group. 
E)  a rich cluster. 
A)  the Virgo cluster. 
B)  the Large Magellanic Cloud. 
C)  the Small Magellanic Cloud. 
D)  the Local Group. 
E)  a rich cluster.

Question 11

The hydrogen Balmer line H β  has a wavelength of 486.1 nm in the laboratory. It is observed in a quasar at 2430.5 nm. What is the change in wavelength (in nm) of this quasar? Is it a "redshift" or "blueshift"?

Accepted Answer

A)  0; no change 
B)  2430.5; redshift 
C)  486.1; blue shift 
D)  1944.4; blueshift 
E)  1944.4; redshift 
A)  0; no change 
B)  2430.5; redshift 
C)  486.1; blue shift 
D)  1944.4; blueshift 
E)  1944.4; redshift

_____________ galaxies have a definite disk component, but contain no evidence of spiral pattern, few hot young stars, and little gas and dust.

What evidence do we have that large galaxies cannibalize small galaxies?

For a galaxy to be active, the supermassive black hole needs to have matter flow into it.

Measuring the Doppler shift of material at various distances from the center of a galaxy can be used to construct a(n) ________________ for that galaxy.

A mega-parsec (Mpc) is equivalent to

Most galaxies appear to be

The units on the Hubble constant are ____________________, as listed in this chapter.

Due to the extremely rapid orbital velocities of material near the center of many galaxies, these galaxies are believed to contain _______________ at their centers.

A ___________ generally contains well over 1000 galaxies and is quite dense. They often contain many giant elliptical galaxies.

The Milky Way galaxy is part of

The hydrogen Balmer line H_β has a wavelength of 486.1 nm in the laboratory. It is observed in a quasar at 2430.5 nm. What is the change in wavelength (in nm) of this quasar? Is it a "redshift" or "blueshift"?

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

The Milky Way Galaxy

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

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 13: Galaxies: Normal and Active

_____________ galaxies have a definite disk component, but contain no evidence of spiral pattern, few hot young stars, and little gas and dust.

What evidence do we have that large galaxies cannibalize small galaxies?

For a galaxy to be active, the supermassive black hole needs to have matter flow into it.

Measuring the Doppler shift of material at various distances from the center of a galaxy can be used to construct a(n) ________________ for that galaxy.

A mega-parsec (Mpc) is equivalent to

Most galaxies appear to be

The units on the Hubble constant are ____________________, as listed in this chapter.

Due to the extremely rapid orbital velocities of material near the center of many galaxies, these galaxies are believed to contain _______________ at their centers.

A ___________ generally contains well over 1000 galaxies and is quite dense. They often contain many giant elliptical galaxies.

The Milky Way galaxy is part of

The hydrogen Balmer line H β has a wavelength of 486.1 nm in the laboratory. It is observed in a quasar at 2430.5 nm. What is the change in wavelength (in nm) of this quasar? Is it a "redshift" or "blueshift"?

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

The Milky Way Galaxy

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

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

The hydrogen Balmer line H_β has a wavelength of 486.1 nm in the laboratory. It is observed in a quasar at 2430.5 nm. What is the change in wavelength (in nm) of this quasar? Is it a "redshift" or "blueshift"?