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River final
- 1. Course Of River And Its Route
- 2. Discussion about the course of river The general terminologies regarding river Erosion and its result on the shape of river The detail insight of the river pattern and its final destination Summary of the entire presentation Question/Answer session
- 3. A river is a natural watercourse, usually freshwater, flowing towards an ocean, lake, sea or another river Rivers can flow down mountains, through valleys or along plains, and can create canyons or gorges.
- 4. Source of river Body of river Confluence Mouth of river
- 5. Primary course Secondary course Tertiary course
- 7. Origination from a mountain lake or a glacier V-shaped valley Water fall Hydraulic action Aberration Attrition Cascade Interlocking spurs Potholes
- 11. The force of the water weakens and breaks up the rocks ABRASION, The material carried in the river wears away the river bed ATTRITION, As the pebbles carried by the river crash into each other, they become smaller and rounder SOLUTION, The water in the river dissolves the minerals in the rocks
- 12. Rolling stones along the river bed.( needs lots of energy) Traction Suspension Clay sized particles are carried along by the river flow Saltation Sand sized particles bounce along the riverbed Solution Some minerals are dissolved by the riverwater river flow
- 13. Formation Of A Waterfall Soft rock Hard rock Steep sides ( gorge ) Vertical erosion Forms plunge pool Undercutting erodes the softer rock forming an overhang The overhang Eventually collapses The process starts again Eroded rock Waterfall Retreats upstream
- 15. Menders Ox bow lakes Flood plains Confluence
- 16. MENDERS, Rivers snaking across and is called mendering river or mender Ox-bow lake, Cut of region of a river is called ox-bow lake FLOODED PLAINS, The area around a river that is usually used for irrigation CONFLUENCE, The point where the tributary joins the river
- 19. Levee Mouth Deposition Delta Estuary Swamps, Marshes (mangrove)
- 20. LEVEES, Is the natural or artificial banking of a river to prevent out flow or river usually due to erosion on bed DEPOSITION, The eroded material is steadily washed into the ocean MOUTH, The area where the river meets the sea
- 21. DELTA, Is the area where the river splits into a few portions and make a Δ shape ESTUARY, An estuary is a partly enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea.
- 22. SWAMP, An area of low-lying, uncultivated ground where water collects; a bog or marsh. MANGROVE, A tree or shrub that grows in chiefly tropical coastal swamps that are flooded at high tide. Mangroves typically have numerous tangled roots above ground and form dense thickets.
- 23. Characteristics Upper Course Middle Course Lower Course Slope Width Depth Straightness Load Main work Valley width Type of load usually steep narrow shallow winding little large/small angular erosion transportation steeper wider deeper meandering some medium/small rounded Transportation narrow gentle quite wide wide deep big meanders lots small+ rounded transportation deposition wide