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Rocks and Topography

contour interval the change in elevation from one contour line to the next
contour line connects points of equal elevation and describes the shape of the landscape
index contour usually the fifth contour line is darker or highlighted to provide a quick reference guide for elevation changes; marked w/ elevations to allow users to quickly determine specific elevations of contour lines
meaning of "topo" place
meaning of "graphos" drawn or written
topography represents the shape of the surface features; physical features such as mountains, hills, and valleys
topographic maps way to represent 3D features of a landscape on a 2D surface
basaltic dense, dark colored igneous rock formed from magma that is rich in magnesium and iron and poor in silica
cementation sedimentary, rock forming process in which large sediments are held together by natural cements that are produced when water soaks through rock and soil
compaction process that forms sedimentary rocks when layers of small sediments are compressed by the weight of the layers above them
extrusive fine grained igneous rock that forms when magma cools quickly at or near Earth's surface
foliated metamorphic rock such as slate and gneiss whose mineral grains flatten and line up in parallel layers
granitic light colored silica rich igneous rock that is less dense than basaltic rock
igneous rock intusive or extrusive rock formed when hot magma cools and hardens
intrusive a type of igneous rock that generally contains large crystals and forms when magma cools slowly beneath Earth's surface
lava thick, gooey, molten rock material flowing from volcanoes onto Earths's surface
metamorphic forms when heat, pressure, or fluids act on igneous, sedimentary, or other metamorphic rock and affect its form or composition, or both
nonfoliated metamorphic rock such as quartzite and marble whose mineral grains grow and rearrange but do not form layers
rock mixture of one or more minerals, volcanic glass, organic material, or other materials; can be igneous, metamorphic, or sedimentary
rock cycle model that describes how rocks slowly change from one form to another through time
sediment loose materials, such as rock fragments, mineral grains, and the remains of once living plants and animals, that have been moved by wind, water, ice, or gravity
sedimentary rock forms when sediments are compacted and cemented together or when minerals come out of solution or are left behind by evaporation
James Hutton recognized the rock cycle in 1788 by observing Siccar Point, Scotland
Created by: rickirules22e