CHAPTER 11 : STARS AND GALAXIES IN THE UNIVERSE

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Across
  1. 5. A reaction that occurs in the core of a star when the temperature and pressure in the core become too high.
  2. 8. A large cloud consisting of dust particles and gases such as hydrogen and helium.
  3. 9. This gas turns into helium in the core of the star for the star to release light and heat energy.
  4. 10. A very small star is called a _______________ star.
  5. 11. A very powerful explosion from the death a massive star.
  6. 12. The star in the Solar System.
Down
  1. 1. This star has a very high density and is produced after a large star explodes.
  2. 2. This star is the brightest star in the night sky.
  3. 3. ____________Negara is an observatory located in Kuala Lumpur.
  4. 4. A set of bodies consisting of millions of stars with gas and dust particles.
  5. 6. This galaxy is a spiral type.
  6. 7. A __________ coloured star is the hottest star.