Unit 8 The Earth

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Across
  1. 2. a length of time in the Earth's history
  2. 3. the outer layer of Earth
  3. 5. wear caused by one rock rubbing against another
  4. 6. molten rock below the Earth's crust
  5. 9. small fragments of rock
  6. 11. when lava cools down on the earths surface
  7. 12. the inner part of the Earth
  8. 17. substance that makeup rock
  9. 20. a molten rock
  10. 21. the modern horse
  11. 23. when grains of sand were pressed together (sedimentary rock)
  12. 25. when eroded rock fragments settle
  13. 26. a liquid state
  14. 27. a division of time within an era
Down
  1. 1. wear on rocks caused by rains, wind, frost and temperature changes
  2. 3. squeezed into smaller space
  3. 4. the features of material, how it behaves
  4. 7. the layer of molten rock below the earth's surface
  5. 8. underground cooling
  6. 10. the remains of plants and animal from millions years
  7. 13. type of igneous rock
  8. 14. fragments of rock that fall on the Earth from space
  9. 15. a type of large particle found in soil
  10. 16. a type of small particle found in soil
  11. 18. allows water pass through
  12. 19. the remains and products of living thongs found in soil
  13. 22. carrying away fragments of rock
  14. 24. fragments of rock