Rock Geography

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Across
  1. 3. properly of rocks and minerals used to identify them
  2. 8. process of formation and destruction of different rock types
  3. 11. colour of powdered or crushed mineral
  4. 14. a device the detects the difference in magnetic field between one location and the next
  5. 16. small, organised particle in rocks, which has smooth sides and sharp edges
  6. 18. rock formed at the Earth's surface by quickly cooling lava
  7. 19. mineral containing a large amount of useful metal
  8. 20. round rocks produced by onion-skin weathering
  9. 22. rock formed from compacted mud, sand or pebbles, or the remains of living things
  10. 25. how easily a mineral can be scratched; measured on the Mohs hardness scale
  11. 27. naturally occurring solid substance with its own chemical composition, structure and properties
  12. 28. characteristic
  13. 29. occurs when rock is subjected to uneven pressure
  14. 30. property of rocks used to identify them
  15. 31. small rock particle; grain size can be used to identify rock type
Down
  1. 1. shininess
  2. 2. rock formed by cooling magma and lava
  3. 4. weathering of rock where the outside of the rock peels off
  4. 5. collection of geophysical data such as differences in magnetic fields and gravity fields between different geological locations
  5. 6. number of smooth planes a mineral breaks along
  6. 7. breakdown of rocks and minerals by movement of water and animals, and extremes of tempreture
  7. 9. rock formed from other rock that has experienced intense heat and pressure
  8. 10. process of weathering in which repeated freezing and melting of water expands cracks in rocks so that eventually part of the rocks splits off
  9. 12. scientist who studies fossils
  10. 13. a device that measured the difference in gravity between one location and the next
  11. 15. hot, molten rock inside the Earth
  12. 17. scientist who studies rocks
  13. 21. the physical interaction between moving charged particles and the magnetic field that is created as a result
  14. 23. property of rocks used to identify them
  15. 24. hot, molten rock that comes to the surface of the Earth in a volcanic eruption
  16. 26. movement of sediment to another area