Multiple Choice
The following questions refer to the sketch below of an H-R diagram for a star cluster.
-Consider the star to which the arrow points.How is it currently generating energy?
A) by gravitational contraction
B) by hydrogen shell burning around an inert helium core
C) by core hydrogen fusion
D) by core helium fusion combined with hydrogen shell burning
E) by both hydrogen and helium shell burning around an inert carbon core
Correct Answer:
Verified
Correct Answer:
Verified
Q5: The following questions refer to the H-R
Q7: Which of the following properties make flare
Q8: Which stars have convective cores?<br>A)low-mass stars<br>B)intermediate-mass stars<br>C)high-mass
Q9: The following questions refer to the H-R
Q11: The helium fusion process results in the
Q12: Choose from the list below for the
Q13: What is a helium flash?<br>A)The ignition of
Q14: Do you think it is possible that
Q15: Why is a 1 solar-mass red giant
Q40: Although some photographs show what looks like