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Biology and Geology 3. Secondary Education

UNIT 8. Surface process. COASTAL FEATURES. Biology and Geology 3. Secondary Education. UNIT 8. Coastal features. Erosive coastal features. Cliff. Cave. Arch. Transportation and sedimentary coastal features. Sand spit. Lagoon. Tombolo. Sand bank. Beach. Marshes.

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Biology and Geology 3. Secondary Education

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  1. UNIT8 Surface process COASTAL FEATURES Biology and Geology 3. Secondary Education

  2. UNIT8 Coastal features Erosive coastal features Cliff Cave Arch Transportation and sedimentary coastal features Sand spit Lagoon Tombolo Sand bank Beach Marshes Biology and Geology 3. Secondary Education

  3. UNIT8 Coastal features Cliffs Cliffs are sharp slopes or sheer vertical walls between the land and the sea. They are formed as the result of marine erosion on rocky coasts. Biology and Geology 3. Secondary Education

  4. UNIT8 Coastal features Arches Arches are relief forms caused by marine abrasion on a cliff. They normally start from a cave. Biology and Geology 3. Secondary Education

  5. UNIT8 Coastal features Caves Caves are natural cavities which are formed by the wearing away of the rocks on the coast due to the effect of abrasion of the waves. They usually form in areas of the cliff where the rocks are softer. Biology and Geology 3. Secondary Education

  6. UNIT8 Coastal features Tombolos These are mounds which formed part of the coast before it was eroded away. Following this erosion, they are left out at sea, but attached to the coast by means of a spit of sand or gravel. Mound Spit Biology and Geology 3. Secondary Education

  7. UNIT8 Coastal features Spits These are long, thin sand banks, perpendicular to the coast and attached to it at one end. They are formed by the action of coastal currents. Biology and Geology 3. Secondary Education

  8. UNIT8 Coastal features Sand spit These are long sandbanks, parallel to the coast and attached to it at one end. They are formed by the action of coastal currents. Biology and Geology 3. Secondary Education

  9. UNIT8 Coastal features Lagoons Lagoons are bodies of salt or brackish water which are formed on the coast when a spit or bar totally or partially closes off a bay. Biology and Geology 3. Secondary Education

  10. UNIT8 Coastal features Beaches These are deposits of sand or gravel that are formed on flat coasts, generally in bays protected from the waves. Biology and Geology 3. Secondary Education

  11. UNIT8 Coastal features Marshes If the sandbanks close off the estuary of a river, the fluvial sediments fill it in, forming marshy ground called a swamp. Biology and Geology 3. Secondary Education

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