questions that follow. Glaciers Besides the earth’s oceans‚ glacier ice is the largest source of water on earth. A glacier is a massive stream or sheet of ice that moves underneath itself under the influence of gravity. Some glaciers travel down mountains or valleys‚ while others spread across a large expanse of land. Heavily glaciated regions such as Greenland and Antarctica are called continental glaciers. These two ice sheets encompass more than 95 percent of the earth’s glacial ice. The Greenland
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Subjects: Philosophy‚ classics‚ music tech and geography Notes and Revision for Geography: Links: https://sites.google.com/a/halliford.net/a-level-geography/home/exam-materials http://coolgeography.co.uk/A-level/AQA/AQA%20A%20level.htm http://web.aqa.org.uk/qual/gce/humanities/geography_materials.php Topic 1: Rivers and Flood Management. Drainage Basins: A drainage basin is an area drained by its rivers and tributaries. It is a natural system with varied inputs of precipitation
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Glacier: a Flowing Stream of Ice Mountain Continental (Greenland‚ Antarctica) Snowfall vs Melting & Evaporation (Ablation) Zone of Accumulation Snowfall Exceeds Melting & Evaporation Excess Snow Turns to Ice & Flows Out Zone of Melting or Ablation Melting & Evaporation Exceeds Snowfall Melting Excess Made up by Ice Flowing in Terminus of Glacier Snowfall & Inflow = Melting & Evaporation (Ablation) Results of Glaciation Abrasion Polish Striations Chatter Marks
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Explain how the processes of weathering‚ erosion‚ transportation and deposition have shaped New Zealand. New Zealand is an amazing Ever-changing land‚ full of natural wonders. But there is more to our country than this‚ much more‚ because our country is unique on Earth. Four and a half billion years have made it a country of extraordinary landforms‚ through four main processes. These processes are called weathering‚ erosion‚ transpiration and deposition. As well as our environment and physical shape
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Contents Introduction………………………………………………………………………………………………………………………………..2 Hudson River Formation……………………………………………………………………………………………………………..5 Hudson Canyon…………………………………………………………………………………………………………………………12 Glacial History…………………………………………………………………………………………………………………………..14 Conclusion…………………………………………………………………………………………………………………………………17 Bibliography………………………………………………………………………………………………………………………………18 Maps & Diagrams…..………………………………………………………………………………………………………………….19 Hudson Canyon……………………………………………………………………………………………………………
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Plate Tectonics The forces that shape the earth begin beneath the lithosphere. Rock in the asthenosphere is hot enough to flow slowly. Heated rock rises‚ moves up toward the lithosphere‚ cools and circulates downward. Riding above this circulation system are the tectonic plates‚ enormous moving pieces of the earth’s lithosphere. [pic] Plate Movement Tectonic Plates move in four different ways. When tectonic plates come into contact‚ changes on the earth’s surface occur. 1. Diveregnt Boundary-
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External Forces One and Two Weathering- is the process that changes solid rocks into sediments. There are four types of weathering water‚ wind‚ glaciers‚ and gravity Water is responsible for most weathering Wind moves sand-sized particles of rock through the air Glaciers move all sizes of sediment Gravity moves broken pieces of rock downslope Physical Weathering- involves the breaking down of rocks into situ without any change in the composition Freeze Thaw- when water seeps into the cracks and
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MINERALS 5 CHARACTERISTICS OF A MINERAL: 1)Naturally Occuring; 2) Be a colid; 3) Have an orderly crystalline structure; 4) have a definite chemical composition; 5) generally be inorganic Which are not classified as Minierals & Why: Gold‚ Water‚ Synthetic Diamonds‚ Ice & Wood: Gold-YES – naturally occurring; Synthetic Diamond: NO – Manmade; Water: NO – liquid state‚ only a solid material can be considered a mineral – in it’s naturally occurring ice state it is a solid and therefore a mineral;
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in Ireland. Drumlins are undoubtedly among the most intensively studied of all glacial landforms and have bee particularly widely used as ice-directional indicators. They frequently occur in ‘fields’ or ‘swarms’ in lowland areas where there was little obstruction to the passage of ice‚ or in piedmont zones where flow was radiative or dispersive. They are also occasionally found on the floors of glacial troughs. Many are ellipsoidal in form‚ some kilometres in length have been observed (Lemke
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the lower atmosphere The Gilgit-Baltistan (GB) of Pakistan formerly known as Northern Areas (NA) of Pakistan has a unique and vital role in sustainable development of Pakistan. Nature has gifted this area with high mountainous ranges‚ massive glaciers‚ glorious rivers and splendid valleys. Gilgit-Baltistan serves as a major water catchment for the Indus River Basin (IRB) upon which majority part of Pakistan depends for hydroelectrically and for irrigation proposes. Gilgit-Baltistan is rich for
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