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The Rock Cycle

The Rock Cycle. By Josh Wickersham, Alyssa Wong-Conway, Alex Levin, and Rachel Connolly. Ecological/Biological Roles. Plants and animals require minerals for life Make up soil for plants Source for precious minerals and metals Provide shelter to small animals Tools to early humans.

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The Rock Cycle

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  1. The Rock Cycle By Josh Wickersham, Alyssa Wong-Conway, Alex Levin, and Rachel Connolly

  2. Ecological/Biological Roles • Plants and animals require minerals for life • Make up soil for plants • Source for precious minerals and metals • Provide shelter to small animals • Tools to early humans

  3. What is a rock? • An assemblage of one or two minerals that form a part of the Earth’s solid body. • A rock normally connotes an individual specimen; it is detached from its outcrop so it has visible boundaries.

  4. How much rock is there total? • Atmosphere – 0% • Lithosphere – 100% • Biosphere – 0% • Hydrosphere – 0%

  5. Types of rocks - Sedimentary • Made of sand, shells, or other particles compressed into sediment and harden over time. • soft and breaks easily. • Ex: Conglomerate, limestone

  6. Types of rocks - Metamorphic • Formed under the surface of the Earth from the metamorphosis that occurs in and under the crust • Often have ribbon-like layers, may have shiny crystals on their surface • Ex: Gneiss, marble

  7. Types of rocks – Igneous • Formed from the crystallization of magma sometimes inside the Earth and other times erupts onto the surface through volcanoes (lava). • Ex: Basalt, obsidian

  8. Rock chart

  9. How sedimentary rocks are formed • Weathering- rocks wear down due to wind, man, or water • Transportation of sediments- rock is brought down a river bed • Deposition- rocks are deposited at the mouth of a river

  10. How metamorphic rocks are formed • Sedimentary or igneous rock is put under intense heat and pressure and then goes through metamorphism. • Through weathering, transportation, and deposition, it becomes sediment again. • Through melting, they become magma.

  11. How igneous rocks are formed • Magma undergoes cooling and crystallization and solidifies into igneous rock • Through weathering, transportation, and deposition, it becomes sediment again

  12. Rock Cycle Chart

  13. Bibliography • Geology for Kids; September 22, 2008 http://www.kidsgeo.com/images/earths-lithosphere.gif • No title; September 22, 2008 http://www.windows.ucar.edu/earth/geology/images/rock_cycle_lg.jpg • The Rock Cycle; September 22, 2008 http://sunny.crk.umn.edu/courses/NatR-Holder/GEOL/PicsLogos3/RockCycle455.gif • Classifying Rocks and Minerals; September 22, 2008 http://www.bcssa.org/newsroom/scholarships/great8sci/Photos/Earth_Photos/metamorphic.jpg • Principles of Soils and Hydrology; September 22, 2008 http://www.cropsoil.uga.edu/soilsandhydrology/images/Granite.jpg • The Rock Cycle; September 22, 2008 http://www.moorlandschool.co.uk/earth/earth_science/utah_sandstone.jpg • Some Basic Concepts Underlying the Science of Geology; September 22, 2008 http://rst.gsfc.nasa.gov/Sect2/Sect2_1a.html • Interactives: Rock Cycle http://www.learner.org/interactives/rockcycle/

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