Origins of the Elements

These questions cover the cosmology and star skills that school trial papers test again and again: evidence for the Big Bang, Hubble's law and the age of the universe, energy from fusion, the proton-proton chain and CNO cycle, star life stories and reading H-R diagrams. Use $c=3.00\times 10^8$ m/s, $1\text{ u}=931.5$ MeV/c² and $1\text{ MeV}=1.602\times 10^{-13}$ J. They start easy and get harder. Stuck? Tap Show a hint for one step at a time.