1. Lower course
1.1. mouth
1.1.1. estuary
1.1.1.1. deep water
1.1.1.2. may be tidal
1.1.1.3. gets wider
1.1.1.4. often big bridges
1.1.1.5. e.g. Thames
1.1.1.6. e.g. Severn
1.1.1.6.1. Severn bore
1.1.2. delta
1.1.2.1. bigger rivers
1.1.2.2. carry more load
1.1.2.3. deposition
1.1.2.4. muddy silt
1.1.2.4.1. becomes land
1.1.2.5. e.g. Nile
1.2. Bigger meanders
1.2.1. ox-bow lakes
1.3. flood plains
1.3.1. should you live there?
1.3.1.1. yes
1.3.1.1.1. flat
1.3.1.1.2. fertile land
1.3.1.2. no
1.3.1.2.1. may flood
2. Upper Course
2.1. Waterfalls
2.1.1. Hard and soft rock
2.1.1.1. Soft rock erroded
2.1.2. Plunge pool
2.1.3. Overhang
2.1.3.1. collapses
2.1.4. Gradually moves back
2.1.4.1. gorge formed
2.2. rapids
2.3. steep
2.4. source
3. middle course
3.1. less steep
3.2. meanders start
3.2.1. turns in the river
3.2.2. become bigger
3.2.2.1. outside of bend
3.2.2.1.1. water moves faster
3.2.2.1.2. errosion
3.2.2.2. inside of bend
3.2.2.2.1. water moves slowly
3.2.2.2.2. deposition
3.3. slower, deeper
4. Rivers you should know
4.1. UK
4.1.1. Severn
4.1.2. Thames
4.2. World
4.2.1. N. America
4.2.1.1. Mississippi
4.2.2. S America
4.2.2.1. Amazon
4.2.3. Africa
4.2.3.1. Nile
4.2.4. China
4.2.4.1. Yangzee