The Life Cycle Of A Star

3. A cool, faint, small star is called a ………… dwarf.
6. The reaction that occurs in the core of a star that produces heat and light – nuclear ……
7. Type of nebula that are the lost outer layers of a star when it changes from a red giant to a white dwarf.
9. The most prevalent gas in nebulae – has only 1 proton.
11. The cloud of gas and dust from which stars are born.
13. Colour of the hottest stars.
14. The shrunken remains of normal stars whose nuclear supplies have been used up – a ……. dwarf.
15. Region in the sun where nuclear fusion occurs.

1. Largest element produced by nuclear fusion as a large sun runs out of fuel – atomic no 26.
2. Type of star containing mostly neutrons produced when a supernova explodes.
4. Explosive death of a star producing many heavier elements.
5. Very large red giants are called …… giants.
8. A rapidly spinning neutron star.
9. Gas produced from the nuclear fusion of hydrogen in the sun’s core.
10. Our sun will become this as its runs out of fuel – a red ………
12. Form from massive stars at the end of their lives – have a strong gravitational pull - ……..holes.