Coastlines Under Threat
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Coastlines are under threat from erosion caused by waves. Waves create wave cut platforms by forcing water into cracks in rock faces, widening the cracks and breaking away the rock over time. Caves form from the widening of faults from hydraulic action and corrosion from acid in seawater. Arches are formed from the further erosion of original caves in lines of weakness. Stacks are produced when arches collapse due to gravity, and stumps are what remain when stacks are eroded further.
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The document discusses various types of coastal erosion and mass movement processes, as well as different techniques for managing coastal erosion, including both hard and soft engineering approaches. Hard engineering techniques use man-made structures like seawalls to defend the coast, while soft techniques work with natural processes like beach nourishment. The document provides examples of techniques like groynes, gabions, revetments, rock armor, and beach replenishment.
Erosion, Weathering And Mass Movement
The document discusses various types of coastal erosion and mass movement processes, as well as different techniques for managing coastal erosion, including both hard and soft engineering approaches. Hard engineering techniques use man-made structures like seawalls to defend the coast, while soft techniques work with natural processes like beach nourishment. The document provides examples of techniques like groynes, gabions, revetments, rock armor, and beach replenishment.
Coastal processes this one
This document provides information about the GCSE Geography course for Mr. Rogers' class, including details on exam dates and percentages of the final mark for different topics. It discusses rivers and coasts, economic geography, settlement and population, and hazards. It provides resources for students, including Mr. Rogers' contact information and links to online materials. Homework is assigned to produce a factfile on a place eroded by the coast.
Cave Guide with Pictures Reduced size
Multiple mountain ranges near the Oregon coast create variable habitats through differential rainfall. The Klamath Mountains are composed of a complex mix of folded, faulted, and metamorphosed rocks, including granites, diorite, gabbro, and ultramafic rocks. Terranes from different locations were pushed together during plate collisions, resulting in a geological "fruit cake" structure. Currently, an oceanic plate slides under the continental plate, fueling volcanism in the Cascades. Radiometric dating indicates the oldest speleothems in Oregon Caves are around 500,000 years old, suggesting the cave itself is half a million to several million years old.
Erosion Ppt
This document discusses different types of erosion and how they shape landscapes. It describes four primary types of erosion caused by water: splash, sheet, rill, and gully erosion. Moving water such as streams and oceans erode cliffs, coastlines, and river banks through hydraulic action, corrosion, and impact. Wind erosion shapes desert landscapes and forms arches and sand dunes. Glaciers erode through abrasion, plucking, and thrusting, carving out mountain valleys and leaving moraines. Mass movement and exfoliation also contribute to gravitational erosion. Factors like precipitation, vegetation, and human activities affect erosion rates. Terracing and windbreaks can help prevent erosion.
Herne Bay
The document summarizes various geomorphological processes that have shaped cliffs in an area of Kent, England located between Herne Bay and the Wantsum Channel. Physical weathering processes like rock expansion and granular disintegration cause cracks and flaking. Chemical weathering such as oxidation and carbonation dissolve rock. Biological factors like burrowing animals and plant roots also erode the cliffs. Coastal erosion from waves, tides, and hydraulic action further wear away the cliffs. Over time this erosion forms landforms like wave-cut platforms and caves and may eventually leave behind stacks and arches.
Water energy by Group 3
Tidal power harnesses the energy of tides and converts it into electricity. Recent technological advancements have improved tidal power designs and turbine technologies, increasing the potential power available and lowering costs. Tidal power uses gravitational forces from the Moon and Sun that cause regular bulges in ocean water levels and currents. These tidal currents and changes in water levels can be captured by structures like dams or turbines to generate electricity.
Coastal Erosion And Its Control
Erosion is when wind, water, and ice take sediments away.
Erosion on coasts by wind and water.
Water is major agent of erosion.
About 21% of all erosion in done by coastal erosion.
Explain the formation of limestone features
Over 70% of Jamaica's land is limestone, which is composed mainly of calcium carbonate. Limestone weathers through carbonation as rainwater mixes with carbon dioxide to form a weak acid that dissolves calcium carbonate. This process forms several distinctive karst landforms, including clints and grikes (flat limestone surfaces separated by narrow grooves), sinkholes, swallow holes, poljes (flat-floored limestone basins), and resurgent streams. Cockpit country is known for its tower karst and cockpit landscapes formed by the intersection and erosion of limestone joints. Underground streams and caves form as carbonic acid dissolves limestone along joints and bedding planes. St
Field lab part 2
This bridge outside of Parkfield, California shows evidence of movement along the San Andreas Fault. The guardrail curves and the deck is angled, demonstrating how the fault has caused the bridge to bend. The San Andreas Fault is a strike-slip fault where the Pacific and North American tectonic plates are moving horizontally past one another, with the Pacific plate moving north and the North American plate moving south.
Coastal erosion processes
The document provides information about different types of coastal erosion and how they can be represented through "Kung Fu" gestures. It includes descriptions of four erosion processes - hydraulic action, abrasion, attrition, and corrosion. Students are asked to create gestures to symbolize each process. The document also contains sample exam questions about coastal erosion processes and features formed by erosion.
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Coastal geography waves, features of erosion and deposition, longshore drift
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
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Coastlines Under Threat
- 1. Coastlines Under Threat By Lara And Steph
- 2. Wave Cut Platform This is a wave cut platform. It has been formed by hydraulic action of the waves. The waves create a bigger force of water into the cracks of the rock face making them wider and eventually the rock breaks away. This is a diagram of a wave cut platform and it’s processes.
- 3. Caves Caves are the result of the hydraulic action that caused the faults in the rock to become wider. The acids in the sea has reacted with the rock. This is called Corrasion. It has made undercutting in the rock.
- 4. Arches These arches have been created, again, by the hydraulic action in the lines of weakness. They were originally caves which over thousands of years have further eroded to form an arch.
- 5. Stacks and Stumps The Isle of Wight Needles has an example of stacks. These are produced by the arches collapsing due to gravity. Headland Here is another example of stacks and stumps in the sea. Due to the process of gravity. Stump