During evolutionary phase A in the figure below, the star is _________. In evolutionary phase B, it is _________.
A) expanding; expanding
B) expanding; contracting
C) contracting; losing mass
D) contracting; contracting
E) gaining mass; contracting
Correct Answer:
Verified
Q18: The main-sequence lifetime of a star
Q19: The evolutionary cutoff between low- and
Q20: Stars evolve primarily because they use up
Q21: The Sun will likely stop being a
Q22: Use the following graph and the
Q24: Using this diagram, identify the star with
Q25: A main-sequence star is unique because:
A) hydrostatic
Q26: If there were mixing processes in a
Q27: As a main-sequence star burns its core
Q28: When a spectral-type G2 star like the
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