6th Grade-Ch. 5 Sec. 3 Sedimentary Rocks

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6th Grade-Ch. 5 Sec. 3 Sedimentary Rocks

  1. 1. Sec. 3
  2. 2. sediment <ul><li>small, solid pieces of material that come from rocks or living things </li></ul>
  3. 3. Processes that change sediment  sedimentary rock <ul><li>1. erosion = running water or wind loosen & carry away pieces of rock </li></ul><ul><li>↓ </li></ul>
  4. 4. Processes that change sediment  sedimentary rock <ul><li>2. deposition = sediment settles out of water or wind ↓ </li></ul>
  5. 5. Processes that change sediment  sedimentary rock <ul><li>3. compaction = presses sediment together </li></ul><ul><li>↓ </li></ul>
  6. 6. Processes that change sediment  sedimentary rock <ul><li>4. cementation = dissolved minerals crystallize & glue sediment together </li></ul>
  7. 9. Types of sedimentary rock
  8. 10. clastic rock <ul><li>rock fragments squeezed together </li></ul>shale sandstone
  9. 11. conglomerate <ul><li>clastic rock made up of large fragments w/ rounded edges </li></ul>
  10. 12. breccia <ul><li>clastic rock made up of large fragments w/ sharp edges </li></ul>
  11. 13. organic rock <ul><li>remains of plants & animals </li></ul>coal limestone
  12. 14. chemical rock <ul><li>minerals dissolved in solution crystallize </li></ul>rock salt limestone
  13. 15. Uses of sedimentary rocks
  14. 16. <ul><li>cement- limestone </li></ul>
  15. 17. <ul><li>arrowheads - flint </li></ul>
  16. 18. <ul><li>White House – sandstone </li></ul>http://www.learner.org/interactives/rockcycle/types3.html
  17. 20. HOMEWORK Bring ingredient for edible rocks on Tues. #1-4 1 box of plain Rice Krispies cereal #5-8 2 bags of mini marshmallows #9-15 4 stick pack of butter #16-22 1 bag of M&M’s (plain, peanut, or peanut butter) #23-26 1 bag of chocolate chips #27-30 1 container of sprinkles #31-33 1 bag of peanut butter chips or butterscotch chips No food - No eat
  18. 21. Activity-Sedimentary Sandwich Cenozoic Era- flowering plants fossils 2 nd slice of bread Mesozoic Era- dinosaur fossils Jelly (old decaying plants) Paleozoic Era- fish fossils Peanut butter (mud) Precambrian Era- jellyfish fossils Bottom slice of bread (sand) Layer of geologic time scale- description Layer of sandwich

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