Question 1

The formation of a galactic central bulge is believed to ____.

Accepted Answer

A)  be a slow steady process lasting billions of years 
B)  start after the formation of spiral arms 
C)  be a violent process which adds mass to the central black hole 
D)  begin when the central black hole has reached mature size 
E)  continue throughout the galaxy's life body 
A)  be a slow steady process lasting billions of years 
B)  start after the formation of spiral arms 
C)  be a violent process which adds mass to the central black hole 
D)  begin when the central black hole has reached mature size 
E)  continue throughout the galaxy's life body

Question 2

Some active radio galaxies exhibit _______________ of gas heated by jets.

Accepted Answer

The answer of Some active radio galaxies exhibit _______________ of...

Question 3

Most supermassive black holes are dormant.

Accepted Answer

A) True 
 B)False

Question 4

Black holes erupt when matter flows into their accretion disk.

Accepted Answer

A) True 
 B)False

Question 5

The luminosity of a Seyfert galaxy varies with a regular period of months or years.

Accepted Answer

A) True 
 B)False

Question 6

Matter falling into a black hole converts _______________ energy into thermal energy.

Accepted Answer

The answer of Matter falling into a black hole converts...

Question 7

Quasars are common in the early Universe because ____ at that time.

Accepted Answer

A)  galactic collisions were more frequent 
B)  black hole collisions were more frequent 
C)  gas and dust clouds were denser 
D)  galaxies were more isolated 
E)  central bulges were larger 
A)  galactic collisions were more frequent 
B)  black hole collisions were more frequent 
C)  gas and dust clouds were denser 
D)  galaxies were more isolated 
E)  central bulges were larger

Question 8

Normal galaxies in the present never went through an active galaxy phase.

Accepted Answer

A) True 
 B)False

The formation of a galactic central bulge is believed to ____.

Some active radio galaxies exhibit _______________ of gas heated by jets.

Most supermassive black holes are dormant.

Black holes erupt when matter flows into their accretion disk.

The luminosity of a Seyfert galaxy varies with a regular period of months or years.

Matter falling into a black hole converts _______________ energy into thermal energy.

Quasars are common in the early Universe because ____ at that time.

Normal galaxies in the present never went through an active galaxy phase.

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

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

Filters

Exam 17: Supermassive Black Holes and Active Galaxies

The formation of a galactic central bulge is believed to ____.

Some active radio galaxies exhibit _______________ of gas heated by jets.

Most supermassive black holes are dormant.

Black holes erupt when matter flows into their accretion disk.

The luminosity of a Seyfert galaxy varies with a regular period of months or years.

Matter falling into a black hole converts _______________ energy into thermal energy.

Quasars are common in the early Universe because ____ at that time.

Normal galaxies in the present never went through an active galaxy phase.

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

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

Filters