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Surfaces and features of the Earth 4th.notebook October 24, 2014 Surfaces of the Earth Oct 1310:10 AM I understand what causes the different Earth surfaces I understand the various types of Earth Landforms Oct 1310:27 AM 1 Surfaces and features of the Earth 4th.notebook October 24, 2014 What Causes the surfaces of the Earth? Plate tectonics... The earth has 3 layers ... Crust Mantle Core Oct 1310:33 AM 1. Thinnest Thinnest layer layer made made of of solid solid rock rock 1. 2. Divided Divided into into continental continental crust crust and and oceanic oceanic 2. crust crust 3. Divided Divided in in large large plates plates that that shift shift and and move move due due 3. to plate plate tectonics… tectonics… to Oct 1311:26 AM 2 Surfaces and features of the Earth 4th.notebook October 24, 2014 Plate tectonics is the theory that the Earth's crust is broken into huge plates that shift and move on the molten layers below the crust. Where two plates come together = fault zones Along these zones mountains, volcanoes, and earthquakes occur. Oct 1410:39 AM Oct 1410:50 AM 3 Surfaces and features of the Earth 4th.notebook mantle crust 1. Thinnest layer made of solid rock 2. Has large plates that shift and moved due to plate tectonics 3. Divided into oceanic/ continental crust October 24, 2014 1. Thickest layer made of hot "silly puddy" A. All layers of the Earth B.All are moving 2 .No plates. It is a hot mass that is always on the move C.Forms of rock 3. No has no real layers Oct 2011:17 AM Oct 1411:36 AM 4 Surfaces and features of the Earth 4th.notebook October 24, 2014 I understand various landforms found on the Earth... Oct 1610:40 AM Continental Landforms Plains The flattest kind of landform...vast areas without the presence of mountains or large hills *** Interior plains of North America are between Rocky and Appalachian Mountains. Oct 1310:10 AM 5 Surfaces and features of the Earth 4th.notebook October 24, 2014 Oct 1310:10 AM Plateau... Flat land like a plain that is higher than the surrounding areas... "Mother nature's TABLE TOP" Pressure pushing upwards caused these large flat mountain areas... Plate tectonics Oct 1611:19 AM 6 Surfaces and features of the Earth 4th.notebook Plains 1. plains are flattest land no mountains or large hills October 24, 2014 Plateau A. Flat surfaces 1.Flat plain areas that are on the top of a mountain B. landforms C. Both made by plate tectonics Oct 2011:32 AM Oct 1310:10 AM 7 Surfaces and features of the Earth 4th.notebook October 24, 2014 Valleys... Gently sloped wall... U shaped Made by glaciers..."Mother Nature's Bull Dozier" Between Mountains Bottoms are large flatlands that have fertile soil Oct 2110:38 AM Oct 1310:10 AM 8 Surfaces and features of the Earth 4th.notebook October 24, 2014 Canyons Steeped walled V shaped Made by slow process that takes millions of year Causes by river eroding and weathering Can be a " rift" between two mountains Oct 2110:48 AM Oct 2111:32 AM 9 Surfaces and features of the Earth 4th.notebook October 24, 2014 Oct 1310:10 AM Dunes Made of sand... Caused by wind/erosion... Slow process... found by deserts/ocean... Oct 2210:14 AM 10 Surfaces and features of the Earth 4th.notebook October 24, 2014 Oct 1310:10 AM Hills... generally lower than 1000 ft tall rounded and smooth side mountains can be weathered into hills Oct 2210:25 AM 11 Surfaces and features of the Earth 4th.notebook October 24, 2014 Oct 1310:10 AM Oct 1310:10 AM 12 Surfaces and features of the Earth 4th.notebook October 24, 2014 Mountains uplifted crust/plates pushed together...plate tectonics taller than 1500 feet... slow process... pointed tops and peaks... Volcanoes magma pushes up the crust Active or dormant Many found in oceans and they form island Eruption is a fast process Oct 2210:31 AM Oct 1310:10 AM 13 Surfaces and features of the Earth 4th.notebook October 24, 2014 Glaciers... Massive sheets of ice move slowly...a foot a year Ice accumulates due to freeing and thawing cycle when enough pressure occurs (becomes heavy) the glacier begins to move...Mother Nature's bulldozer Oct 2211:31 AM 14