Multiple Choice
A white dwarf star, as it evolves, undergoes which of the following changes?
A) Luminosity and size decrease, while its temperature remains constant.
B) Its temperature remains constant, but its radius and luminosity decrease.
C) It shrinks in size, the resulting release of gravitational energy maintaining both luminosity and temperature constant.
D) Luminosity and temperature decrease, but its size remains constant.
Correct Answer:

Verified
Correct Answer:
Verified
Q60: A shock wave is produced during a
Q61: During the first red giant phase, the
Q62: In 1990, the HST first examined SN
Q63: Very heavy elements beyond iron in the
Q64: A planetary nebula is created:<br>A)over several hundred
Q66: A supernova of Type Ia has a
Q67: When the small but dense white dwarf
Q68: A "carbon star" has more carbon on
Q69: When an iron core is formed in
Q70: It is now thought that most elements