Question 1

If a star has a parallax of 0.05",then its distance in light years is about:

Accepted Answer

A)   6.4 light years.
B)   12.7 light years.
C)   20 light years.
D)   65 light years.
E)   100 light years.

Question 2

Which of the following is the most common type of star?

Accepted Answer

A)   high mass main sequence
B)   low mass main sequence
C)   white dwarfs
D)   red giants
E)   blue supergiants

Question 3

On the H-R diagram,white dwarfs lie Sirius B and Procyon B lie:

Accepted Answer

A)   at the top left.
B)   at the top right.
C)   close to the Sun, near the center.
D)   at the lower left.
E)   at the lower right.

Question 4

What is the typical main sequence lifetime of a G-type star?

Accepted Answer

A)   10 million years
B)   100 million years
C)   1 billion years
D)   10 billion years
E)   100 billion years

Question 5

Compared to the size of the Sun,in what range of sizes are nearly all stars found?

Accepted Answer

A)   0.5 to 2 solar radii
B)   0.1 to 1.0 solar radii
C)   0.5 to 50 solar radii
D)   1 to 100 solar radii
E)   0.01 to 100 solar radii

Question 6

In what range of masses are most stars found? What about the range in luminosity? How are they related?

Accepted Answer

To shine as a main sequence star,the mas...

Question 7

Describe the distance and composition of the Alpha Centauri system.

Accepted Answer

The Alpha Centauri system is composed of...

Exam 17: The Stars: Giants,Dwarfs,and the Main Sequence

Describe the distance and composition of the Alpha Centauri system.

Correct Answer
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The Alpha Centauri system is composed of...
View Answer

On the H-R diagram,white dwarfs lie Sirius B and Procyon B lie:

Correct Answer
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Compared to the size of the Sun,in what range of sizes are nearly all stars found?

Correct Answer
verified

What is the typical main sequence lifetime of a G-type star?

Correct Answer
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In what range of masses are most stars found? What about the range in luminosity? How are they related?

Correct Answer
verified
To shine as a main sequence star,the mas...
View Answer

Which of the following is the most common type of star?

Correct Answer
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If a star has a parallax of 0.05",then its distance in light years is about:

Correct Answer
verified

Exam 17: The Stars: Giants,Dwarfs,and the Main Sequence

Describe the distance and composition of the Alpha Centauri system.

Correct AnswerverifiedThe Alpha Centauri system is composed of...View AnswerShow Answer

On the H-R diagram,white dwarfs lie Sirius B and Procyon B lie:

Correct AnswerverifiedShow Answer

Compared to the size of the Sun,in what range of sizes are nearly all stars found?

Correct AnswerverifiedShow Answer

What is the typical main sequence lifetime of a G-type star?

Correct AnswerverifiedShow Answer

In what range of masses are most stars found? What about the range in luminosity? How are they related?

Correct AnswerverifiedTo shine as a main sequence star,the mas...View AnswerShow Answer

Which of the following is the most common type of star?

Correct AnswerverifiedShow Answer

If a star has a parallax of 0.05",then its distance in light years is about:

Correct AnswerverifiedShow Answer

Correct Answer
verified
The Alpha Centauri system is composed of...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
To shine as a main sequence star,the mas...
View Answer

Correct Answer
verified

Correct Answer
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