Nuclear fusion has 5 syllables.
| # | Sentence | |
|---|---|---|
| 1. | The physicist was aware of the potential danger of nuclear fusion. | |
| 2. | A planet is not a star, because it is not massive enough that nuclear fusion can happen in its core. | |
| 3. | A star is a brilliantly glowing sphere of hot gas whose energy is produced by an internal nuclear fusion process. | |
| 4. | In medium size stars, after the nuclear fusion has used up all the fuel it has, gravity will pull the remaining material closer together. The star will shrink. It is then called a "white dwarf". | |
| 5. | In large size stars, nuclear fusion will continue until iron is formed. In stars, iron acts like an energy sponge. It soaks up the star's energy. This energy is eventually released in a big explosion called a supernova. | |
| 6. | Every second, the Sun converts 4 million tons of its material into heat and light through the process of nuclear fusion. | |
| 7. | Nuclear fusion takes place deep in the sun's core at a temperature of about 15 million degrees Celsius. As the heat travels out through the sun's layers, it becomes much cooler, but still hot enough to glow in visible light. | |
| 8. | Another lunar resource of potential development value is helium-3, which can be used for nuclear fusion fuel. |