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Story in the Rocks

Story in the Rocks. By: Andrea Lupariello Ryan Greenwood. Weathering and Erosion. Weathering is the effects of the forces of weather on rock surfaces. Erosion is the process that wears away at the earth’s surface. Water is the most important agent of erosion.

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Story in the Rocks

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  1. Story in the Rocks By: Andrea Lupariello Ryan Greenwood

  2. Weathering and Erosion • Weathering is the effects of the forces of weather on rock surfaces. • Erosion is the process that wears away at the earth’s surface. • Water is the most important agent of erosion. Check out this link for more information on erosion: http://geography.about.com/od/physicalgeography/a/erosion.htm

  3. What is the difference between weathering and erosion? The difference between weathering and erosion is that… • When a particle is loosening, that is weathering. • Once a particle starts moving, that is erosion. Check out this link for more information: http://dhn.iihr.uiowa.edu/runoff/erosion.htm

  4. Chemical vs. Physical weathering • Chemical weathering is when the internal structure of a mineral or rock is changed by adding or removing elements. • Mechanical weathering is when a rock is physically disintegrating into smaller pieces through temperature and pressure changes. Check this link out for more information: http://www.ux1.eiu.edu/~cfjps/1300/weathering.html

  5. Sediment and Deposition • Sediment is fragments of earth (like sand) that is deposited by wind and water. • Deposition is the state of being deposited or precipitated.

  6. Sediment and its relation to Deposition • Sediment is fragments of rock that have been weathered. The sediments are then carried and deposited through deposition.

  7. Sheet Erosion • Sheet erosion occurs when run-off water travels over a sloping area and gradually erodes it. • Gravity and water make eroded material slide downhill. • Gravity is the force that brings things to the center of the earth.

  8. Formation of The Grand Canyon • Scientists believe that the Colorado river eroded the Kaibabo Plateau and formed the Grand Canyon.

  9. Rock Cycle • The rock cycle is a continuous cycle that changes rocks between the different types (Sedimentary, Metamorphic and Igneous) • Three different ways a rock can form is through heat and Pressure, cooling and Lithification.

  10. Igneous Rock • Igneous rocks are rocks that are formed from Lava cooling by volcanoes. • There are Extrusive and Intrusive Igneous rocks.

  11. Sedimentary Rock • Sedimentary rocks are sediments that have been compacted and cemented into a rock through lithification. • They normally form in layers

  12. Metamorphic Rocks • Metamorphic rocks are other forms of rocks that go through heat and pressure to become Metamorphic.

  13. Fossils • Fossils are left over remains of once living things. • They are found in sedimentary rocks. • Fossils form by being covered by sediments and then they are cemented into a sedimentary rock.

  14. The law of Superposition • The law of superposition is a key lay based on observations based on natural history.

  15. Geological time scale • The geological time scale is millions of years that are separated into eras, periods, and epochs. • This includes the living things in the time periods.

  16. Section 2 bibliography • http://www.cotf.edu/ete/modules/msese/earthsysflr/rock.html • http://www.enchantedlearning.com/subjects/dinosaurs/dinofossils/Fossilhow.html • http://hyperphysics.phy-astr.gsu.edu/hbase/geophys/geotime.html

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