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Geography -RIVERS by Mind Map: Geography -RIVERS
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Geography -RIVERS

Upper Course

Waterfalls

Hard and soft rock, Soft rock erroded

Plunge pool

Overhang, collapses

Gradually moves back, gorge formed

rapids

steep

source

middle course

less steep

meanders start

turns in the river

become bigger, outside of bend, water moves faster, errosion, inside of bend, water moves slowly, deposition

slower, deeper

Lower course

mouth

estuary, deep water, may be tidal, gets wider, often big bridges, e.g. Thames, e.g. Severn, Severn bore

delta, bigger rivers, carry more load, deposition, muddy silt, becomes land, e.g. Nile

Bigger meanders

ox-bow lakes

flood plains

should you live there?, yes, flat, fertile land, no, may flood

Rivers you should know

UK

Severn

Thames

World

N. America, Mississippi

S America, Amazon

Africa, Nile

China, Yangzee