earth science unit1 2020

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Across
  1. 3. the true color of mineral shown when ground into a powder
  2. 4. a ridge that forms from glacier piling up debris
  3. 7. the distinctive geometric form of a mineral
  4. 8. light reflected from the surface of a mineral
  5. 10. parallel flaky and needlelike minerals a metamorphic rock
  6. 11. saturated rock or sediment that water can move easily through
  7. 13. wavelike features in rock layers that resemble ocean waves
  8. 17. thick lower part of Earth’s mantle composed of solid rock
  9. 21. reflects how tightly the atoms in a substance are packed
  10. 22. the study of Earth’s structure composition and history
  11. 23. the lowest part of a wave
  12. 24. underground concentration of magma that creates volcanoes
  13. 26. crust and the outermost layer of the mantle
  14. 29. a deep hole dug or drilled into the ground to penetrate an aquifer below the saturated zone
  15. 30. hard mineral substance forms the solid part of Earth’s crust
  16. 31. rock fragments that range in size from gravel to boulders
  17. 32. slow flowing lava that is cool enough to have partially solidified
  18. 33. difference in elevation between highest and lowest points
  19. 35. beneath the crust and above the outer core
  20. 36. a crack in a rock leaving them vulnerable to mechanical weathering
  21. 37. the surface features of a region
  22. 38. molten rock beneath Earth’s surface
  23. 39. remains of prehistoric plants and animals in sedimentary rock
Down
  1. 1. naturally occurring material that can be mined profitably
  2. 2. huge masses of ice that flow with gravity and cover about 10%
  3. 4. dense rocks separating Earth’s crust from its mantle
  4. 5. most plentiful minerals in crust contain oxygen and silicon
  5. 6. the concentration of salt in a substance
  6. 9. rare minerals that do not contain silicon
  7. 12. removal by the impact of water wind or ice
  8. 14. loose material on Earth’s surface
  9. 15. the force by which objects are attracted to one another
  10. 16. the steep downwind side of a sand dune
  11. 18. the relatively thin brittle outer layer of Earth
  12. 19. weathered rock fragments mixed with soil
  13. 20. fast flowing lava with a ropy surface formed by the rapid
  14. 25. where Earth’s weather occurs
  15. 27. the ability of some minerals to break along smooth flat planes
  16. 28. top layer of Earth’s surface rock mineral animal veggie bits
  17. 34. the study of rocks
  18. 35. a solid inorganic occurs naturally in rocks