# fusion or fission??4. What force fights against fusion?Answer: 5. Where in the universe is fusion common?Answer: 6. Fission can release a great amount of energy. Why?Answer: 7. Which can best...

fusion or fission??

4. What force fights against fusion?

Answer:

5. Where in the universe is fusion common?

Answer:

6. Fission can release a great amount of energy. Why?

Answer:

7. Which can best be described as a "tug-of-war" – fusion or fission?

Answer:

8. Which can best be described as a splitting – fusion or fission?

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9. Which can best be described as a pushing together – fusion or fission?

Answer:

10. Which is currently common in nuclear power plants – fusion or fission?

Answer:

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Nuclear fusion and nuclear fission are opposites. Fusion is the process by which two atomic nuclei join together into a single, larger nucleus. Because nuclei are made up of neutrons and protons, the whole nucleus has a positive charge. Since likes repel, the nuclei repel each other, and this repulsion has to be overcome in order for fusion to occur. In stars, which have a lot of mass and consequently a lot of gravity, nuclei are pushed together and fusion is common there naturally.

Fission is the splitting of large nuclei into smaller parts, like a tug of war. Whenever fission occurs, some of the material in the nucleus is converted into energy. Since the energy is the product of the converted mass squared times the speed of light (`E=mc^2)`, a lot of energy is released. Nuclear fission is used in nuclear power plants to create electricity.