What process heated the early solar nebula as it slowly condensed toward a central protosun?
A) radioactive decay of heavy elements originally formed in the Big Bang
B) release of heat as molecules formed and gases condensed into ices
C) thermonuclear fusion in the protosun, followed by radiative heating of the nebula
D) generation of heat by collisions of particles as they gained kinetic energy in falling toward the center of the nebula

Question

Quizplus · Accepted Answer

The generation of heat by collisions of particles as they gained kinetic energy in falling toward the center of the nebula is a key process that heated the early solar nebula. As particles moved closer to the center, their potential energy was converted into kinetic energy, leading to collisions that generated heat.

What Process Heated the Early Solar Nebula as It Slowly