Exam 11: Formation and Structure of Stars

When a large gas cloud starts to collapse in a free-fall due to gravity, the temperature of the gas will _____________.

The proton-proton chain needs a high temperature because the protons must overcome the _____________.

How does a gas cloud become hot enough to ignite nuclear reactions?

What is the difference between the proton-proton chain and the CNO cycle?

What is a protostar and how does it get its energy?

List three processes energy can be transported between regions.

Energy flows by radiation or convection inside normal stars but almost never by _____________ because radiation or convection is much more efficient.

When a large gas cloud starts to collapse in a free-fall due to gravity, the rotation rate will ______________.

Star clusters are important to the study the stellar evolution because stars in a given cluster have the same _____________.