Question 1

Meanders

Accepted Answer

Meanders form in the middle and lower course where lateral erosion causes the river to widen. The outside of a river bend will erode more quickly as the water is forced to the outside bend as it turns. The water on the outside bend is deeper and faster causing even more erosion, enlarging the bend. The water on the inside bend of the river is much shallower and slower. As a result, material is deposited (forming a slip-off slope).

Question 2

Estuaries

Accepted Answer

An estuary is the tidal part of the river. It will be near the mouth of the river, where the river meets the sea. The water level in the estuary rises and falls with the tide. During high tide, large areas of valley floor will be flooded. As the tide falls, material will be deposited, creating mudflats which will be exposed during low tide.

Question 3

Interlocking Spurs

Accepted Answer

Interlocking spurs form in the upper course of a river where vertical erosion creates steep- sided v-shaped valleys. The river winds and bends avoiding areas of hard rock creating interlocking spurs (which look similar to the interlocking parts of a zip).

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River Landscapes in the UK

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