Weathering and Erosion PASS Preparation

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Weathering and Erosion. p. 21 Oklahoma PASS Social Studies Test Preparation WorkbookMiddle Grades Level. . Weathering. The procedure of decay and/or breaking down of rocks, soils and their minerals through normal, substance, and organic processes.It is not to be mistaken for disintegration, which is the development of rocks and/or weathered items by water, wind, ice or gravity. Source: Wikiped

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Weathering and Erosion – PASS Preparation Teacher Guide This movement is intended to acclimate understudies with the ideas of physical and compound weathering and disintegration. This is proficient through giving more noteworthy understanding and delegate cases for a weathering and disintegration table of data. Cases of inquiries on this subject can be found on page 21 of the Oklahoma PASS Social Studies Test Preparation Workbook – Middle Grades Level . Outline NCGE Standards Physical Systems: STANDARD 7: The physical procedures that shape the examples of Earth's surface. Condition and Society: STANDARD 14: How human activities change the physical condition. PASS Objectives 7 th Grade World Geography: STANDARD 3: The understudy will look at the cooperations of physical frameworks that shape the examples of the world's assets. STANDARD 5. The understudy will analyze the associations of people and their condition. Review Level Seventh Grade GIS Skill Level No GIS information is vital Time One 50-minute class period for fruition of movement. Materials: This movement requires PCs with Microsoft PowerPoint. Sources: Wikipedia http://www.wikipedia.org Weathering and Erosion – PASS Preparation Teacher Guide

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Weathering and Erosion p. 21 Oklahoma PASS Social Studies Test Preparation Workbook Middle Grades Level

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Weathering The procedure of deterioration as well as breaking down of rocks, soils and their minerals through regular, concoction, and organic procedures. It is not to be mistaken for disintegration, which is the development of rocks as well as weathered items by water, wind, ice or gravity. Source: Wikipedia.org

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What it does: Mechanical Weathering "Physically separates extensive bits of rocks" The reason for the deterioration of rocks. More often than not, it produces littler rakish parts (like scree). Substance and physical weathering frequently go as an inseparable unit. For instance, breaks misused by mechanical weathering will expand the surface range presented to substance activity. Moreover, the concoction move making place in breaks can help the crumbling procedure. Source: Wikipedia.org

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Scree Source: Los Alamos National Laboratory Source: Los Alamos National Laboratory

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Mechanical Weathering Examples "Solidified water extends and augments splits" Example of mechanical weathering on a cold transported stone. Source: Department of Geology and Geophysics, University of Wisconsin.

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Mechanical Weathering Examples "Seeds fall into breaks and develop into trees that split the stones" Source: USGS

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Chemical Weathering "Changes a stone's substance cosmetics" An adjustment in the synthetic organization of shake Requires the nearness of water to some degree Principal specialists are: 1. water 2. oxygen 3. CO 2 (carbon dioxide)

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Chemical Weathering Examples "Corrosive made by water and carbon dioxide can disintegrate rocks" The surface example on this platform shake is honeycomb weathering, created by salt crystallization. This illustration is at Yehliu, Taiwan. Planet Geography third Edition (2005). Source: Wikimedia Commons.

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Chemical Weathering Examples "Corrosive made by water and carbon dioxide can break down rocks" A crisply broken shake demonstrates differential concoction weathering advancing internal. This bit of sandstone was found in frigid float close Angelica, New York. Source: Wikipedia.org

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Chemical Weathering Examples "Corrosive rain destroys shake surfaces" Source: DHD Multimedia Gallery

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Discussion Slide: More weathered versus less weathered hieroglyphics

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Discussion Slide: Stone test divider The stone test divider was built to concentrate the execution of stone subjected to weathering. It contains 2352 individual specimens of stone.

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Discussion Slide: Cave development

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Erosion The uprooting of solids (soil, mud, shake, and different particles) by the specialists of wind, water, ice, development because of gravity, or living creatures (on account of bioerosion). In spite of the fact that the procedures might be concurrent, disintegration is to be recognized from weathering, which is the decay of shake. Disintegration is an essential common process, however in many spots it is expanded by human land utilize. Some of those poor land utilize rehearses incorporate deforestation, overgrazing and street or trail building. Source: Wikipedia.org

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What It Does – Erosion by Moving Water "Cuts into shake and wears it away" Erosion is both descending, developing the valley, and headward, augmenting the valley into the slope. In the soonest phase of stream disintegration the erosive movement is overwhelmingly vertical, the valleys have a commonplace V cross-area, and the stream angle is moderately steep. At the point when some base level is achieved the erosive action changes to horizontal disintegration which extends the valley as the stream winds over the valley floor. Source: Wikipedia.org

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What It Does – Erosion by Moving Water "Conveys bits of shake to different spots" In all phases of stream disintegration by a long shot the most disintegration happens amid times of surge when progressively and quicker moving water is accessible to convey a bigger residue stack. Source: Wikipedia.org

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Erosion – Moving Water Example "Disintegration is an imperative normal process, yet in many spots it is expanded by human land utilize." Source: Wikipedia.org Source: Wikimedia Commons Source: USDA

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Erosion – Moving Water Examples "Cuts gulches and valleys" Source: Photo-net

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Erosion – Moving Water Examples "Makes Flood Plains and Deltas" Source: Stephen Codrington. Planet Geography third Edition (2005)

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Erosion – Moving Water Examples "Makes Flood Plains and Deltas" Source: NASA

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Erosion – Moving Water Examples "Makes Flood Plains and Deltas" Deltaic stores of the Carboniferous time can be found in this roadcut on Rte 15 only north of Williamsport, Pennsylvania. Cross sheet material and discontinuities can be seen. The time is alluded to as carboniferous, since coal stores are related with these stone arrangements. Source: Wikipedia.org

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What It Does – Erosion by Wind "Diverts soil and stores it somewhere else" Also known as eolian disintegration, this is the development of shake or potentially dregs by the wind. The wind causes tidy particles to be lifted and accordingly moved to another district. Wind disintegration for the most part happens in zones with practically no vegetation, frequently regions where there is insufficient precipitation to bolster vegetation. Windbreaks are regularly planted by ranchers to decrease wind disintegration.

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Erosion – Wind Examples "Clean Bowls are shaped by loss of soil" Source: USDA NRCS

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Erosion – Wind Examples "Tidy Bowls are framed by loss of soil" Source: USDA NRCS

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Erosion – Wind Examples "Rich farmland is made by new stores of soil" Cornfield on loess soil in Iowa. Source: University of Iowa

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Erosion – Wind Examples "Rich farmland is made by new stores of soil" Loess in Hungary has gone by twist from Asia. Source: Wikipedia.org

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What It Does – Erosion by Glaciers (Ice) "Convey, earth, rocks and stones" "Wear away land" Glaciers dissolve the landscape primarily through two techniques: scraped spot and culling. As the ice sheet streams over the bedrock's broken surface, it lifts pieces of shake that are brought into the ice. This procedure is known as culling , and it is delivered when subglacial water infiltrates the breaks and the resulting solidifying extension isolates them from the bedrock. At the point when the water extends, it goes about as a lever that relaxes the stone by lifting it. Along these lines, residue of all sizes turn out to be a piece of the ice sheet's heap. Scraped area happens when the ice and the heap of shake parts slide over the bedrock and capacity as sandpaper that smoothens and cleans the surface arranged underneath. Source: Wikipedia.org

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Erosion – Glacier Examples "Convey earth, rocks, and stones" "Wear away land" Plucking . Can you tell which way the ice was streaming? Source: NOAA

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Erosion – Glacier Examples Source: Wikimedia Commons "Convey earth, rocks, and stones" "Wear away land"

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Erosion – Glacier Examples Glacial striations. Source: University of Washington Glacial striations. Source: Ohio Wesleyan University "Wear away land"

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Erosion – Glacier Examples "Cut out the Great Lakes" Source: US Army Corps of Engineers

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What It Does – Erosion by Waves and Currents Shoreline disintegration, on both uncovered and protected coasts, principally happens through the activity of streams and waves, yet ocean level change can likewise assume a part. Source: Wikipedia.org

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Erosion – Shoreline Example Source: Wikimedia Commons

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Weathering and disintegration are powers that: Change the surface of the earth Affect climate designs Cause volcanoes and seismic tremors Take put inside the earth Acid rain is a case of: Wind disintegration Chemical weathering Erosion by moving water Mechanical weathering Questions Name: Hour: 3. Which of the accompanying is not a fundamental specialist of concoction weathering: CO 2 Water Sunshine Air 4. The four sorts of disintegration we considered incorporate the greater part of the accompanying with the exception of: Hail Wind Glaciers/ice Moving water 5. Genuine or False (Circle One). Disintegration is a vital regular process, yet in many spots it is expanded by human land utilize. 6. Genuine or False (Circle One). Icy masses dissolve the landscape basically through two meth

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