Study Questions Week 7  Astronomy 104: Stellar Astronomy Fall 2002

Study questions from Chapter 18 (these are the questions you wrote in class)

Name the three types of nebula. What are their characteristics?

Why are reflection nebula blue? Why are emission nebula red?

Name the six components of the interstellar medium.

What characteristics of dust cause polarization of starlight?

Compare and contrast the affects gas and dust have on starlight.

How can we measure the distribution of neutral hydrogen?

What does it mean to be polarized? What is the importance of being polarized?

What are often found next to emission nebula?

What are forbidden lines?

What is 21cm radiation?

Identify and explain the two effects that dust has on starlight.

Compare and contrast reflection and dark nebula.

How is dust arranged in space? How do we know that?

What can we tell about a nebula based on its spectral lines?

Study questions from other weeks:

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