Rocks, Weathering & Caves

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Across
  1. 1. is a rock that forms when magma cools either below or above Earth's surface
  2. 3. secrete mild acids that dissolve the rocks and further break down the rocks into soil
  3. 5. weathering that transforms rocks into new substances
  4. 8. is a rock that forms when sediment and the remains of tiny living things settle and harden
  5. 11. beautiful formations in caverns, form as dissolved calcite is deposited out of water
  6. 14. a weak acid that occurs when carbon dioxide dissolves in water
  7. 16. are people who enjoy exploring caves
  8. 17. forms when a stalactite and a stalagmite grow together
  9. 18. weathering that breaks rocks into smaller and smaller pieces
  10. 19. when oxygen in the air combines with what a rock is made of to form new compounds that can weaken the rock
  11. 20. is a process of breaking down rocks
Down
  1. 2. hang from the ceiling and look like stone icicles
  2. 4. a rock that forms below Earth's crust by great heat and pressure from other types of rocks
  3. 6. frost _______ occurs when water in rocks freezes, expands and forces the rock apart
  4. 7. the rock _____, is what scientists call the changing of rock
  5. 9. frost _______ occurs when water gets underneath a rock and is pushed up out of the ground when the water freezes
  6. 10. is mechanical weathering that occurs when rocks rub against each other
  7. 12. "grow" up from the ground as a result of the dripping of dissolved calcite
  8. 13. from pressure release, the creation of cracks and breaks in rock in which sheets of rock peel away like layers of an onion
  9. 15. a chemical substance, typically corrosive and sour tasting