How do magnetic fields slow the collapse of a nebula?
Why does gravity overcome heat in nebula causing the formation of stars? (Hint:What is happens to the heat in the nebula?)
What is the first stage of the star formation process? Describe the conditions where stars would form.
What is fragmentation? Why does it occur?
What distinguishes a protostar from a nebula? What is the difference between a protostar and an emission nebula?
What happens to the temperature and size of a protostar when it is undergoing Kelvin-Helmholtz contraction?
What happens to the temperature and size of a protostar when it on the Hayashi track?
What conditions must occur at a stars core before nuclear fusion begins?
Draw a diagram of a protostar evolving toward the main sequence. Label the Kelvin-Helmholtz contraction, the Hayashi track, nuclear ignition, and the final adjustments toward the main sequence.
How long does it take for a one-solar mass star to reach the main sequence? Will more massive stars form more quickly or more slowly than this?