The source of energy for a contracting protostar comes from:
A) thermonuclear energy
B) kinetic energy
C) chemical energy
D) gravitational potential energy
E) radiation energy

Question

Quizplus · Accepted Answer

The gravitational potential energy is the source of energy for a contracting protostar. As it contracts, the protostar's internal temperature and pressure increase, leading to the eventual ignition of thermonuclear reactions in its core.

The Source of Energy for a Contracting Protostar Comes From