Review Questions - Formative Library | Library

1

Describe some differences between quasars and normal galaxies.

1

Describe the arguments supporting the idea that quasars are at the distances indicated by their redshifts.

1

In what ways are active galaxies like quasars but different from normal galaxies?

1

Why could the concentration of matter at the center of an active galaxy like M87 not be made of stars?

1

Describe the process by which the action of a black hole can explain the energy radiated by quasars.

1

Describe the observations that convinced astronomers that M87 is an active galaxy.

1

Why do astronomers believe that quasars represent an early stage in the evolution of galaxies?

1

Why were quasars and active galaxies not initially recognized as being “special” in some way?

1

What do we now understand to be the primary difference between normal galaxies and active galaxies?

1

What is the typical structure we observe in a quasar at radio frequencies?

1

What evidence do we have that the luminous central region of a quasar is small and compact?

Please take the time to check out the source for this material from Openstax if you plan to use this in your lesson plan!: https://openstax.org/books/astronomy/pages/27-review-questions