Multiple Choice
When a spectral-type G2 star like the Sun leaves the main sequence, its
A) luminosity and surface temperature both stay the same.
B) luminosity and surface temperature both decrease.
C) luminosity increases and its surface temperature decreases.
D) luminosity and surface temperature both increase.
E) luminosity decreases and its surface temperature increases.
Correct Answer:
Verified
Correct Answer:
Verified
Q28: _ keeps the core of a red
Q29: What is the escape velocity from the
Q30: The Sun eventually will become a<br>A) nova.<br>B)
Q31: Why is a star's time as a
Q32: When a star depletes its core supply
Q34: What is a planetary nebula?<br>A) a planet
Q35: If a main-sequence star's core temperature increased,
Q36: Explain what the triple-alpha process is and
Q37: The largest low-mass stars have masses that
Q38: You observe a 0.8 M<sub>SUN </sub>white dwarf