Coasts-Definitions

Hydraulic Action
Air becomes trapped in joints and cracks on a cliff face. When a wave breaks, the trapped air is compressed and forced further into the cracks. This weakens the cliff and causes erosion.
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Abrasion
Bits of rock and sand in waves grind down cliff surfaces.
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Attrition
Waves smash rocks and pebbles on the shore into eachother, and they break and become smoother.
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Solution
Acid in seawater dissolves certain rocks eg. chalk and limestone.
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Dynamic
Constantly changing.
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Coast
The narrow ***** of shoreline that separates the land from the sea.
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What type of system is the coast? Why?
An open system because it has inputs from the outside eg. sediment from rivers and outputs into other systems eg. sediment transferred into deep seas.
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Which two sub-systems is the coast split into?
Cliff sub-system and the beach sub-system.
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Other cards in this set

Card 2

Front

Abrasion

Back

Bits of rock and sand in waves grind down cliff surfaces.

Card 3

Front

Attrition

Back

Preview of the front of card 3

Card 4

Front

Solution

Back

Preview of the front of card 4

Card 5

Front

Dynamic

Back

Preview of the front of card 5
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