As a star begin to form the initial energy source is from
A)nuclear fusion.
B)nuclear fission.
C)gravitational potential energy.
D)magnetic fields.

Question

Quizplus · Accepted Answer

The initial energy source for a star's formation is gravitational potential energy. As a cloud of gas and dust collapse under the force of gravity, its potential energy is converted to thermal energy, which heats up the core of the protostar. Once the core reaches temperatures high enough for nuclear fusion to occur, fusion becomes the main energy source for the star, but initially, it is powered by gravitational potential energy.

As a Star Begin to Form the Initial Energy Source