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Review Questions

Last updated about 4 years ago

11 questions

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Question 1

1.

Describe some differences between quasars and normal galaxies.

Question 2

2.

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

Question 3

3.

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

Question 4

4.

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

Question 5

5.

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

Question 6

6.

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

Question 7

7.

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

Question 8

8.

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

Question 9

9.

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

Question 10

10.

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

Question 11

11.

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