Jack's Science Revision

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Across
  1. 3. A group of millions or billions of stars.
  2. 4. The largest planet
  3. 8. Atmosphere, oceans, sedimentary rocks, fossil fuels and organisms.
  4. 11. An enormous ball of burning gas.
  5. 13. planets The 4 planets in our Solar System that are furthest from the Sun.
  6. 14. A reaction that releases heat energy to the surroundings (A temp increase will be observed) ?
  7. 15. The rock cycle shows how the materials in rock are recycleed over millions of years.
  8. 16. The 4 planets in our Solar System that are closest to the Sun.
Down
  1. 1. A substance that speeds up the rate of a reaction?
  2. 2. Breaking up of existing rock.
  3. 5. A reaction that absorbs heat energy from the surroundings (A temp decrease will be observed)?
  4. 6. What is the part of the atmosphere nearest to the Earth?
  5. 7. A star and the planets and other objects orbiting it.
  6. 9. igneous and metamorphic
  7. 10. Billions of galaxies that make up everything that exists.
  8. 12. The carbon cycle shows how carbon compounds enter and leave carbon stores.