The Universe - Stars

Question 1

Describe the life cycle of a small - medium mass star.

Answer 1

1. Stellar nebula
2. Star
3. Red giant
4. Planetary nebula
5. White dwarf
6. Black dwarf

Question 2

Describe the life cycle of a massive star.

Answer 2

1. Stellar nebula
2. Massive star
3. Red supergiant
4. Supernova
5. Neutron star or black hole

Question 3

What is the Hertzssprung-Russell diagram?

Answer 3

A scatter plot of all stars based on their surface temperature and their absolute magnitude.

Question 4

What is the word equation for nuclear fusion?

Answer 4

Hydrogen-2 (deuterium) + hydrogen-3 (tritium) = Helium + neutron + energy