Rocks

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Across
  1. 3. What do we call a non-living animal preserved in stone?
  2. 6. One kind of sedimentary rock that is made up of many tiny pieces of rock, and mineral.
  3. 7. A rock has this when it is broken in half, and the sides are still smooth.
  4. 10. What family of rock means “born of fire”?
  5. 15. The kind of weathering where tree roots or other organic material break down rocks.
  6. 17. Which rocks are quickly formed above the ground, and have little to no crystals?
  7. 18. This type of rock is dark coloured and is made up of mostly magnesium and iron.
  8. 19. The center of an earthquake.
  9. 20. The only material with a hardness of 10.
  10. 23. A coarse-grained metamorphic rock derived from sandstone.
  11. 28. What scale measures the hardness of a metal?
  12. 29. What is the act of the continents slowly moving closer and apart?
  13. 32. Happens when plate tectonics rub against each other, creating destruction around places like San Francisco, Japan, and Nepal.
  14. 34. What is the layer of the earth that is made up of liquid metals?
  15. 37. What does ‘morph’ mean?
  16. 39. What animals produce calcite that surrounds their bodies that form massive reefs?
  17. 41. The layer of the earth that is made of solid metal, part of the core.
  18. 42. What class of rock is light-coloured and has little silicon in it?
Down
  1. 1. What do we call an opening in the earth’s surface that erupts magma?
  2. 2. The layer of the earth that is underneath the crust.
  3. 4. Every rock goes through this cycle.
  4. 5. Usually occur after or during an earthquake; large area of land sliding down a mountain range.
  5. 8. The result of two plate tectonics rubbing against each other, creating a spiky-like texture in the earth’s surface.
  6. 9. Frost-wedging is one form of this weathering..
  7. 11. This metal is found in high amounts in large leafy vegetables.
  8. 12. The type of weathering where a rock is broken down by a chemical substance such as acid rain.
  9. 13. These rocks take a long time to cool underneath the earth’s surface.
  10. 14. The act of hot water shooting into the air in a volcano like action.
  11. 16. The type of rocks that form from sediments of other rocks.
  12. 21. What rock cools quickly above the ground, bearing little to no minerals?
  13. 22. What do scientists call the moving, broken up pieces of the earth’s crust?
  14. 24. What is the process of moving sediments from one place to another?
  15. 25. What kind of rock can float on water, using its little pocket of gas for help.
  16. 26. What rocks mean to change shape?
  17. 27. The scale used to measure the magnitude of an earthquake.
  18. 30. The process of breaking down rocks, minerals, and soil.
  19. 31. When a rock is broken in half, and the two pieces are rough or jagged, the rock has this.
  20. 33. A rock made up of sand grains cemented together.
  21. 35. What is a naturally occurring solid material made up of minerals?
  22. 36. The material used in order to make rocks.
  23. 38. What is the science of finding out about the earth and what it’s made up off?
  24. 40. The thinnest layer of the earth.