Investigation 1-2 Earth History

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Across
  1. 2. on the rocks and driving them apart
  2. 4. the rock that forms Earth’s crust
  3. 7. a carbonate mineral with the chemical formula CaCO3​
  4. 12. erosion the different rates at which layers of weathered earth materials are carried away by water,
  5. 15. rocks that are smaller than gravel but bigger than silt
  6. 16. the settling of sediments
  7. 17. wedging when the roots of plants grow and search for minerals and water in rock fractures, exerting
  8. 19. a sedimentary rock made mostly of calcite​
  9. 22. a sedimentary rock made of clay or silt​
  10. 23. wedging the process of water freezing in the cracks of rocks and breaking them apart
  11. 24. a process by which particles are separated out from water, wind, or ice by size, shape, or density
Down
  1. 1. weathering the process by which rocks are broken down by breaking and banging
  2. 3. material that is deposited by water, wind, or ice
  3. 4. a low-lying area where water may accumulate
  4. 5. the process of matching up rock layers from different locations​
  5. 6. particles that are smooth or slick; smaller than sand and silt, it is difficult to see just one
  6. 8. a thickness or bed of weathered rock material​
  7. 9. weathering the process by which rocks are weathered due to reactions with substances in water and
  8. 10. the carrying away of weathered earth materials by water, wind, or ice
  9. 11. or ice
  10. 13. a natural feature of Earth’s surface with a characteristic shape​
  11. 14. the grinding and bumping of rocks that cause physical weathering
  12. 18. the process by which larger rocks crack and break apart over time to form smaller rocks
  13. 20. rocks that are smaller than sand but bigger than clay
  14. 21. a sedimentary rock made of sand particles stuck together​