Multiple Choice
A star must have a certain minimum mass in order that gravity squeeze its matter sufficiently to
A) hold it together as a single body.
B) produce a temperature high enough for it to glow.
C) produce a temperature high enough for nuclear reactions to start.
D) turn its interior into liquid hydrogen.
Correct Answer:
Verified
Correct Answer:
Verified
Q23: The heaviest elements on the earth were
Q24: The size of a star can be
Q25: The duration of the sunspot cycle is
Q26: Sunspot activity does not affect<br>A) auroras.<br>B) the
Q27: The spectrum of a star can provide
Q29: The color of a relatively hot star
Q30: White dwarfs<br>A) are young stars.<br>B) are old
Q31: Stars at the lower end of the
Q32: A gamma-ray burst is a short, intense
Q33: In the HR diagram, most stars are<br>A)