11.2

Question 1

General term used for any fuzzy patch in the sky either light or dark

Answer 1

Nebula

Question 2

Dust lane

Answer 2

A lane of dark obscuring interstellar dust in an emission nebula or galaxy

Question 3

How do the properties of long lived stars compare to those of short lived stars?

Answer 3

Long lived stars begin their lives with less mass and a smaller amount of hydrogen

Question 4

Lover lifetime means:

Answer 4

Less mass

Question 5

What does stellar lifetime depend on?

Answer 5

How much fuel is available for fusion and how rapidly it is burned

Question 6

More massive stars have higher fuel but shorter lives. Why?

Answer 6

Because they burn through the fuel more rapidly

Question 7

A main sequence star with twice the mass of the sun has a luminosity if?

Answer 7

10 times that of the sun

Question 8

If a star has a luminosity 10 times that of the sun. How much faster does it burn through its fuel?

Answer 8

10

Question 9

A star with twice the mass of the sun has:

Answer 9

1. A luminosity 10 times that of the sun
2. Will burn through its fuel 10 times faster
3. Starts with twice as much fuel
4. Lifetime is much less than half of the sun

Question 10

A more massive main sequence star has a higher rate of fusion which means it is?

Answer 10

More luminous