I. Write true if the statement is true. If the statement is false, change the underlined term to make the statement true.
1. A star changes its heat into energy.
2. Stellar means the formation of elements in the center of the star.
3. During nuclear reactions in large stars, helium is changed into carbon.
4. A star stays in the main sequence stage until all of its helium is used up.
5. A protostar forms when gravity pulls the dust and gases in a nebula together.
6. A star in which the outer layer has been blown off in an explosion is called a nebula.
7. During or right after a supernova, a star may collapse to become a black hole.
8. A very dense ball that may form from a supernova is a protostar.
9. Atomic mass is the number 10. of protons in an atom. Equilibrium fission reaction of light elements don't proceed past Fe because of Fe's location at the peak of the curve of binding energy.
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Answer:
1. True
2. False - Stellar means related to a star.
3. False - During nuclear reactions in large stars, helium is changed into heavier elements like carbon, oxygen, and nitrogen.
4. False - A star stays in the main sequence stage until all of its hydrogen is used up, not helium.
5. True
6. False - A star in which the outer layer has been blown off in an explosion is called a supernova remnant or planetary nebula.
7. True
8. False - A very dense ball that may form from a supernova is a neutron star.
9. False - Atomic mass is the sum of the number of protons and neutrons in an atom.
10. True
Explanation:
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