IB Geo 11 Rivers

abrasion (for rivers)

the grooving and smoothing process caused by the river rolling pieces of rock along

Attrition

the breaking up of rock carried by the river and their rounding caused by contact with the river bed and with each other

Rivers form ______ Valleys

V- Shaped

A river is eroded (i.e undercut) along the inner or outer bank of a meander?

outer bank

material deposited alongside a river form a ______

slip off slope or point bar

Alluvium

when the river undercuts its banks and floods the surrounding plain, which then form a thick mass of alluvium

Braiding

the process of a river dividing into several stream and forming islands

Why does braiding happen?

when the river banks are soft and eroded

Estuary

The place where two waters meet (i.e. fresh water & salt water)

What are the benefits of tidal changes?

they help keep an inlet clear of sand and mud