physical uk geography Flashcards
describe north norfolk coast
rates of erosion are increased by strong prevailing winds from the north sea
exposure to weathering
soft rock
management in one location can affect other locations
depositional features
spits
beaches
bar and lagoons
types of coastal zone managements
hold the line
advance the line
strategic realignment
do nothing
types of hard engineering
groynes
sea walls
gabions
revetments
types of soft engineering
planting vegetation
beach nourishment
offshore breakwater
cliff drainage
types of erosion
hydraulic action
attrition
abrasion
hydraulic action
water breaks pieces off after it gets into cracks
attrition
rounded through bashing together
abrasion
friction wears down
igneous rocks
old, formed from lava and magma
sedimentary rocks
formed from eroded sediments on the sea bed
metamorphic rocks
heated and compressed sedimentary rock
glaciation
as land is uplifted, rivers erode into it creating v shaped valleys
ice ages bring glaciers to upland areas
a variety of features is left behind once it melts
upland - weathering
freeze thaw creates scree slopes
scree is unstable and moves easily in rockfalls
heavy rain increases the risk of landslides
upland - post glacial river processes
deep u shaped valleys
misfit streams
mud and silt deposited in valley bottoms making them fertile