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| 3 distinctive physical layers of the earth are the Core, Mantle, & Crust; with each layer broken into sub-layers |
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| the amount of mass per unit of volume. less dense objects rise above more dense objects in fluids |
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| Layers Of The Earth Classification |
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| the layers are classified according to temp., density, & compasition |
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| rocks are composed ofone or more minerals |
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| properties are determined by their component elements |
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| naturaly occuring, crystalline, inorganic solids |
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| elements are organized by properties on the periodic table |
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| classified by their process of formation(igneous,sedimentary,metamorphic) |
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| Rocks and minerals are different by properties such as fracture,cleavege,color,luster,streak,spacific gravity,hardness,&crystall shape |
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| all rocks expirence change through the rock cycle:weathering,erosion,cementation,recrystalization,melting,& metamorphisim |
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| earth's surface is composed of different lithospheric plates |
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| heat from the earth's core rises to the mantle, creating convection currents that cause the plates to move |
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| movement of the lithospheric plates cause major geologic events on the surface (earthquakes,volcanoes,mountain,tsunamis etc.) |
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| continintal drift and sea floor spreading lead to the current theory of plate tectonics |
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| constructive forces within the earths crust create major geographical features |
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| destructive forces wear down earths surface features |
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| mountains are classified by the means by which they are created: folding,faulting,unwrapping, and igneous activities |
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| some plains are formed bythe erosion of plateaus and mountains |
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| hot spot volcanoes occur in areas that aren't plate boundries |
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| volcanic erruptions contribute to the building up of land |
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| weathering forces break down rock into small particals |
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| erosion transports weathered particals |
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| the major agents of erosion are gravity,water,wind,and glaciers |
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| the placement of weathered particals is called deposition |
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| tides contribute to the process of erosion and deposition |
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| deposition of particals within the ocean maintains its mineral composition |
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| tectonic forces create subserface ocean features (trenches&ridges)that effect ocean currents |
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