Measuring Properties of Stars - Quiz 12


1. A star has a parallax of 0.04 arc seconds. What is its distance?
A)..4 light years
B)..4 parsecs
C).. 40 parsecs
D)..25 parsecs
E)..250 parsecs

2. A star radiates most strongly at 400 nanometers. What is its surface temperature?
A)...400 K
B)...4000 K
C)...40.000 K
D)...75,000 K.
E)...7500 K

3. Which of the following stars is hottest?
A)... An M star.
B)... An F star
C)... A G star
D)... A B star
E)... An O star

4. A star that is cool and very luminous must have
A)... a very large radius.
B)... a very small radius.
C)... a very small mass.
D)... a very great distance.
E)... a very low velocity.

5. In what part of the H-R diagram do white dwarfs lie?
A)... Upper left
B)...Lower center
C)... Upper right
D)...Lower right
E)... just above the Sun on the Main Sequence.



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