COASTAL ENVIRONMENTS
BY: Yonase Kidane and Brodie Hughes
EROSION
•-HYDRAULIC PRESSURE: Compression of air and water Causing cracks throughIncreasing pressure
•ABRASION (CORRASION): When waves throws rocks colliding into the cliff causing it to break down and erode.
•ATTRITION:Rocks colliding within each other causing it tto break up into smaller peices
WAVE POUNDING AND CORROSION
Wave Pounding: Immense force of waves causing the cliffs to weaken.Corrosion: The acid in water causes the cliffs to erode
BY VAI
CAVES, ARCHES, STACKS AND STUMPS
CAVEHoles inside rocks by erosion causes it to
become bigger and bigger until an arch is created.
ARCH
Arch: A large gap in a cliff created by erosion.Stack: When a part of the cliff grows too big to withhold it’s pressure and weight and breaks.
STACKStack: When the weight above exceeds what the arch can sustain and collapses causing a stack to remainStump: The erosion made on stacks causing it to erode leaving a stump
BLOWHOLE
Created as sea caves grow landwards and upwards into vertical shafts and expose themselves towards the surface
BIBLIOGRAPHY http://en.wikipedia.org/wiki/Erosion http://en.wikipedia.org/wiki/Blowhole_(geolog
y) Classmates Images:
Google Images