As a protostar evolves, its temperature:
A) decreases because it is radiating
B) decreases because of gravitational contraction
C) decreases because of angular momentum
D) increases because of nuclear fusion
E) increases due to the kinetic energy of infalling material

Question

Quizplus · Accepted Answer

As a protostar evolves, its temperature increases due to the kinetic energy of infalling material, which heats up as it compresses under gravity.

As a Protostar Evolves, Its Temperature