Question 1

What distance method is used to determine the distance to the most distant galaxies when only a redshift is measured?

Accepted Answer

A)  Hubble's law 
B)  supernova observations 
C)  period-luminosity relationship of variable stars 
D)  parallax 
A)  Hubble's law 
B)  supernova observations 
C)  period-luminosity relationship of variable stars 
D)  parallax

Question 2

What is the major observational difference between a Seyfert galaxy and a normal spiral galaxy?

Accepted Answer

A)  Normal spiral galaxies usually have shorter spiral arms. 
B)  Normal spiral galaxies never contain a supermassive black hole at their center. 
C)  The central region of a Seyfert galaxy is much brighter. 
D)  Seyfert galaxies don't contain any star formation. 
A)  Normal spiral galaxies usually have shorter spiral arms. 
B)  Normal spiral galaxies never contain a supermassive black hole at their center. 
C)  The central region of a Seyfert galaxy is much brighter. 
D)  Seyfert galaxies don't contain any star formation.

Question 3

The mass of a single galaxy might be found by

Accepted Answer

A)  the double galaxy method. 
B)  the rotation curve method. 
C)  the cluster method. 
D)  any of these methods. 
E)  none of these methods. 
A)  the double galaxy method. 
B)  the rotation curve method. 
C)  the cluster method. 
D)  any of these methods. 
E)  none of these methods.

What distance method is used to determine the distance to the most distant galaxies when only a redshift is measured?

What is the major observational difference between a Seyfert galaxy and a normal spiral galaxy?

The mass of a single galaxy might be found by

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

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 13: Galaxies: Normal and Active

What distance method is used to determine the distance to the most distant galaxies when only a redshift is measured?

What is the major observational difference between a Seyfert galaxy and a normal spiral galaxy?

The mass of a single galaxy might be found by

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

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