Landforms And Landscapes Processes Defenitions

Question 1

Corrosion(solution)

Answer 1

A chemical reaction between certain rock types and salt and acids in the seawater. Evident in limestone and chalk cliffs, causing water to turn milky colour at bottom of cliffs

Question 2

Corrasion

Answer 2

Sand and pebbles in the waves are thrown against rock surfaces with a lot of force, breaking off more rocks which are then also used

Question 3

Attrition

Answer 3

When boulders in seas are rolled around constantly and chip away at each other until smooth pebbles or sand are formed

Question 4

Hydraulic action

Answer 4

The pressure of the water being thrown against the cliffs by the wave. Includes pressure of air in cracks. When water gets into the cracks, it compresses the air in the cracks, putting more pressure on them.

Question 5

A coast

Answer 5

A narrow strip between the land and the sea which constantly changes due to the effect of land, air and marine processes.

Question 6

Swash

Answer 6

The rush of seawater up the beach after the breaking of a wave

Question 7

Fetch

Answer 7

The maximum distance of water over which winds can blow. This effects the size of the wave. The bigger the fetch the longer the wave

Question 8

Constructive wave

Answer 8

Deposit sand and pebbles that form beaches. They have a powerful swash which is more powerful the backwash and so deposits sediment on beaches. Break infrequently. Found on gentle sloped beaches.

Question 8

Destructive waves

Answer 8

Responsible for coastal erosion and removing sediment from the coastline. They have a stronger back wash than the swash so they carry sand and pebbles away from the shore. Break 10-15 times a minute. Found on steep beaches.