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26 terms

Coastal processes and landforms

A set to help you revise coastal processes and landforms. From Http://www.coolgeography.co.uk
STUDY
PLAY
Fetch
the stretch of open water over which the wind blows
Constructive wave
a wave where the swash is stronger than the backwash
Destructive wave
a wave where the backwash is greater than the swash
Wave crest
the top of a wave
Beach
a deposit of sand or shingle
Waves break
because of friction from the sea bed
Spring tides
are the strongest and highest
Weathering
is the break down of rocks insitu
Erosion
is the break down and movement of rock material
Mass movement
the downhill movement of rock and soil because of gravity
Rockfall
fragments of rock break away from the cliff due to weathering
Landslide
blocks of rock slide downhill
Rotational slip
slump of saturated soil and weak rock along a curved surface
Hydraulic action
the power of waves compressing air in cracks
Corrasion
fragments of rock are hurled against cliff faces by waves and used as abrasive tools
Attrition
rock fragments in the sea water grind against one another and become smaller
Longshore drift
The zig zag motion of sediment along the coastline
Saltation
the hopping motion of sediment along the sea bed
Traction
where pebbles are rolled along the sea bed
Swash
The movement of waves and sediment UP the beach
Backwash
The movement of waves and sediment DOWN the beach
Headland
A promontory of land jutting out to sea
Bay
a broad coastal inlet often with a beach
Stack
a large vertical column of rock detached from a cliff face
Wave cut platform
a flat area of rock in front of a cliff
Spit
a long narrow finger of sediment formed by coastal deposition