The life cycle of stars

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  • Created by: jaaaz_v
  • Created on: 19-05-15 17:31

1. Nuclear fusion is...?

  • The joining of small atomic nuclei
  • Hydrogen and helium nuclei forming
  • Helium nuclei joining to form hydrogn nuclei
  • The fusion of nuclear weapons
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2. What do stars initially form from?

  • They're ejected from the sun
  • Clouds of dust and gas
  • Nuclear fusion
  • Hydrogen nuclei

3. When red giants become unstable they release their outer layers as a...?

  • Purple nebula
  • Planetary nebula
  • Dust and gas nebula
  • Hydrogen nebula

4. What do small stars, much like our sun, swell up to form?

  • Super giants
  • Green giants
  • Red giants
  • Red super giants

5. What makes red giants and red super giants red?

  • They become red because too much nuclear fusion is taking place
  • The sun
  • They become red because their surface cools
  • They become red because their surface heats up

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