Multiple Choice
Pre-main sequence stars (not protostars) on the H-R Diagram are _____.
A) above and to the right of supergiants
B) below and to the left of the main sequence
C) below and to the left of white dwarfs
D) above and to the right of the main sequence
E) not on the H-R Diagram yet
Correct Answer:

Verified
Correct Answer:
Verified
Q34: How do low mass stars in the
Q35: Which trigger could start the gravitational contraction
Q36: A protostar will continue to collapse due
Q37: The temperature at the core of a
Q38: Describe the concept of a "birth line"
Q40: Energy flows by radiation or convection inside
Q41: During the main sequence lifetime of a
Q42: List three processes energy can be transported
Q43: One of the major star forming regions
Q44: The proton-proton chain needs a high temperature