Edible Geology

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  • Could try to cut the jello into 20 pieces, one for each child. If it’s not enough, cut 10 and split children into girl/girl, boy/boy pairs. Then have boys try uplifting and girls try overthrust. Save one piece for teacher to try erosion with a blow dryer.
  • Edible Geology

    1. 1. Edible Geology -directions
    2. 2. Limestone <ul><li>First layer is limestone </li></ul><ul><li>Formed when land was under water </li></ul>
    3. 3. Sandstone <ul><li>Formed by sand deposited by a river </li></ul><ul><li>AGENT EROSION </li></ul><ul><li>Fossils are often found here </li></ul>
    4. 4. COAL <ul><li>Formed when area was part of a large swamp </li></ul><ul><li>Very important to fossil hunters </li></ul><ul><li>Where you find coal, you are likely to find fossils nearby </li></ul><ul><li>Dark coal beds are easy to spot </li></ul>
    5. 5. COAL
    6. 6. Sandstone - 2
    7. 7. Siltstone <ul><li>Made of grains that are smaller than sand, but larger than clay </li></ul>
    8. 8. Final Formation <ul><li>Which layer is the “oldest”? </li></ul><ul><li>Where are the fossils? </li></ul><ul><li>Will they ever be found? </li></ul><ul><li>Rock layers can stretch, bend, and even break </li></ul>
    9. 9. Uplifting <ul><li>Pressures inside the earth form mountain ranges </li></ul><ul><li>Can twist rock layers </li></ul><ul><li>Slide a knife under the center of your gelatin square and lift. </li></ul><ul><li>Bend…and break </li></ul>
    10. 10. Overthrust <ul><li>Rock layers (strata) can get mixed up another way </li></ul><ul><li>Gently push in from opposite sides of the square so the center rises up. </li></ul><ul><li>Mixed up strata </li></ul><ul><li>makes it hard to </li></ul><ul><li>determine where </li></ul><ul><li>youngest strata is </li></ul>
    11. 11. Faulting <ul><li>Earth’s surface has big cracks called faults </li></ul><ul><li>Sometimes land around a fault line is raised above another </li></ul><ul><li>Don’t waste your </li></ul><ul><li>jello…just look here: </li></ul>
    12. 12. Finally…Erosion <ul><li>Rocks are constantly being worn away by wind and rain, uncovering fossils </li></ul><ul><li>Ahhhh! </li></ul>

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