Revision Physical Landscapes Coastal landforms – transportation and deposition Getting started… 1. List the process of coastal transportation in order of the size of sediment transported (largest to smallest). 2. Name the process that describes the direction of coastal transportation along the coastline. 3. Sketch a shingle beach that has been constructed by graded deposition. Annotate it to explain graded deposition. 4. List the landforms of coastal deposition that you have studied. Bonus question – can you name the located examples from the south coast of England? Deposition happens during the BACKWASH (as the wave travels back down the beach towards the sea). The largest material is deposited first at the top of the beach and the deposition is then graded by size from this point towards the sea: graded deposition. 09/01/2022 3 Getting started… Sand beach / shingle beach Constructive / destructive beach Berms Storm beach Spit (double, curved) Bar Sand dunes 6. Sand beach and sand dunes Studland Beach and sand dunes 09/01/2022 5 7. Shingle Beach Chesil Beach 09/01/2022 6 8. Spit Hurst Castle spit 09/01/2022 7 8. Hurst Castle spit Ferry Crossing 09/01/2022 8 9. Bar Slapton Sands 09/01/2022 9 CASE STUDY: South coast of England (Devon, Dorset, Hampshire) • To explain the characteristics and formation of beaches (6, 7), spits (8) and bars (9) Devon Dorset Hampshire 6 4 2 7 9 5 3 1 8 EXAM PRACTICE Explain how a spit forms and changes over time (4 marks) EXAM PRACTICE EXAM PRACTICE • Spit – long, narrow area of deposition with one end joined to the land and the other protruding out to sea • Longshore drift along the coastline driven by the prevailing wind • Coastline changes direction curving inland • Transportation and deposition continues in the direction of LSD • Deposition occurs in the area of calmer water; friction with existing deposits cause more deposition • Curves may occur due to wave refraction or changes in wind direction • Spit may grow in length but does not reach mainland because of a river current (more energy, less deposition) or the coastline does not change direction again • Vegetation may accumulate stabilising the spit • Behind the spit in an area of calm water deposition occurs creating a salt marsh 8. 9. Spits and bars Thinking further What is similar and different between the spit (left) and bar (right)? 9. Bar Slapton Sands 09/01/2022 32 Slapton Sands REVISION CHECKLIST… retrieval practice for landforms Revision Living with natural hazards Global circulation, air pressure, tropical revolving storms REVISION CHECKLIST… retrieval practice for storms Sketch the tricellular model and label 1. High pressure zones 2. Low pressure zones 3. Convection rain 4. Frontal rain 5. Hot deserts 6. Cold deserts Polar cell F The tri-cellular model Rising:F Ferrel cell F Falling airF Tropics Hadley cell Equator Hadley cell Tropics Falling airF F Ferrel cell Rising:F F Polar cell Sunday, 09 January 2022 Match up the statements Low pressure is caused by… …colder air falling leading to… …clouds, rainfall and strong inward blowing winds. High pressure is caused by… …warmer air rising leading to… …clear skies, sunshine and weak outward blowing winds. Sunday, 09 January 2022 Review Low pressure is caused by… …warmer air rising leading to… …clouds, rainfall and strong inward blowing winds. High pressure is caused by… …colder air falling leading to… …clear skies, sunshine and weak outward blowing winds. Thinking further Quick quiz! • What is happening to the vertical movement of air when there is LOW pressure at the Earth’s surface? • What causes this LOW pressure to occur? • Why might the weather by WET and WINDY when low pressure occurs? Sunday, 09 January 2022 Starter Challenge This is a satellite image of a hurricane (TRS). Write a list of features of this weather system that you can SEE on the image. Sunday, 09 January 2022 Starter Challenge Thick clouds in the middle Bands of thin cloud on the edge Spiral cloud pattern No cloud in the centre Sunday, 09 January 2022 Tropical revolving storms Why do storms occur in these locations? Tropical revolving storms Warm oceans over 27 degrees Celsius…why? REVISION CHECKLIST… retrieval practice for storms Sketch a TRS cross-section and annotate it to explain its formation REVISION CHECKLIST… retrieval practice for storms Sketch a TRS cross-section and annotate it to explain its formation and to show where the strongest winds and heaviest rain is found Need help? Convection low pressure Rising air…(relative humidity) Condensation Latent heat More rising air Tropopause Air movement high to low pressure Eye of the storm The structure of a tropical storm Air that has risen eventually reaches a point where it is not warmer than the surrounding air and so it stops rising and travels outwards, aided by upper winds Sunday, 09 January 2022 This creates another level of clouds at the top of the tropical storm that are thin and made from ice crystals Revision Paper 1 All three revision checklists have been sent to you via eQE
