1. Why are main sequence stars stable?
- The inward force of gravity is balanced by the outward pressure from the heat thats formed by fusion
- The conditions in space (eg. heat and light)
- The inward force of the heat from fusion is balanced by the outward force of gravity
- There are no forces in main sequence stars, which makes them stable.
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Other questions in this quiz
2. When red giants become unstable they release their outer layers as a...?
- Planetary nebula
- Hydrogen nebula
- Dust and gas nebula
- Purple nebula
3. The nuclear fusion of nuclei produces...?
- Hydroxide nuclei
- Helium nuclei
- Hydrogen nuclei
4. What do small stars, much like our sun, swell up to form?
- Super giants
- Red giants
- Red super giants
- Green giants
5. What makes red giants and red super giants red?
- They become red because their surface cools
- The sun
- They become red because their surface heats up
- They become red because too much nuclear fusion is taking place