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Science chapter 7

TermDefinition
Isostasy A term geologists use to describe the balance of the weights of rock, water, and ice, and the upward force of the mantle
Elevation The height of a mountain peak above the mean sea level
Relief A region having mountains and valleys is an example with a great relief
Mid– Atlantic Ridge Home of the longest and most extensive mountain system on the earth
Buttes An erosion all remnant of a plateau
Fins Landforms that looks like fish fins
Monadnock Formed by rising magma and erosion
Volcanoes Depositional mountain with vent for magma to escape
Orogeny The geological history of the origin of mountains through tectonic processes
Mountains and hills The difference between them is height and local/ historical traditions
Mesa Flat-topped hill with steep sides
Elevation vs. actual height Elevation is measurement of mountain from MSL. Actual height is measurement from base of mountain to summit
Countour lines When they are close together, they show steep incline. Further apart indicates gradual incline/slope
Noah's Flood Many of the erosional remnants of plateaus,may have been created when water drained off the land and eroded away the softer materials that had not yet hardened into rock
Monocline Convergent land form. Strata broke along a fault line and fell down forming a step
Grabens Divergent land form. Found in the center of a rift where rocks cracked and dropped downward
Basin Subsidence landform. Formed when magma chamber emptied and rock strata sagged into a bowl-like structure
Created by: Kaylee2002
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