Solutions

STAR LIFE ANSWER KEY - LEVEL 1

1. Gravity pulls hydrogen gas together to form a cloud. (4)

2. Nuclear fusion occurs which causes the star to glow. (2)

3. A main sequence star, which can live for millions or even billions of years, forms. (7)

4. A red giant forms when the star's hydrogen level drops. (6)

5. Iron, which acts as an energy sponge, forms within the star. (5)

6. A supernova occurs. (1)

7. If it is a massive star, a neutron star forms. If it is a super massive star, a black hole forms. (3)

NEBULAR NONSENSE ANSWER KEY - LEVEL 1

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