Title: A quick test

Q: On what does the lifetime of a star depend on?
- It's initial mass (correct)
- On the efficiency of it's energy source
- It's random

Q: How are heavy elements up to the iron group created in stars?
- By nuclear fusion (correct)
- By nuclear fission
- No need to create them, they were always there since the Big Bang

Q: What are the two fundamental explosion meachanism of stars?
- Thermonuclear and core-collapse (correct)
- Nuclear fission and fusion
- Oxyhydrogen and nitroglycerin

Q: Whar are the observables of a core-collapse supernova?
- Electromagnetic, neutrino and gravitational waves (correct)
- Light
- The disappearance of a star on the celestial sphere