•Chapter 7: The
Sun – example question
•Q. The fusion
process in the sun, the "proton-proton" chain, requires high temperatures because:
•c of the ground-state energy of the Hydrogen atom.
•c of the presence of Helium atoms.
•c the colliding protons need high energy to overcome
the Coulomb barrier.
•c of the need for low density.
•c the
neutrinos carry more energy away than the reaction produces.