Multiple Choice
What is a planetary nebula?
A) a disk of gas surrounding a protostar that may form into planets
B) what is left of the planets around a star after a low-mass star has ended its life
C) the expanding shell of gas that is no longer gravitationally held to the remnant of a low-mass star
D) the molecular cloud from which protostars form
E) the expanding shell of gas that is left when a white dwarf explodes as a supernova
Correct Answer:
Verified
Correct Answer:
Verified
Q55: Do you think it is possible that
Q56: The following questions refer to the H-R
Q57: This diagram represents the life track of
Q58: Process of Science: Based on what you
Q59: Do you think it is possible that
Q61: All of the following are involved in
Q62: The main source of energy for a
Q63: All stars that become supernovae will leave
Q64: What types of stars end their lives
Q65: Will our Sun contribute heavy elements to