coast
hard engineering
types of waves
types of erosion
erosion from weathering
soft engineering
Beach nourishment
Rock and timber groynes
Clifftop protection
Beach recharge
Gabion
Long groyne
destructive waves
destruct beach weak swash and a strong back swash and erodes the sand
constructive waves
Helps form construct a beach build up beach gentle sloping
Attrition
process of rocks hitting each other and breaking into smaller rocks
Hydraulic action
force of water hitting the cliff and squeezing air into the cracks
Solution
chemical reaction between the sea water and the the minerals in the rocks making it dissolve e.g. limestone
abrasion
sandpaper effect of the waves and their load grinding over rock and smoothing it
biological weathering
Roots breaking into rocks
physical weathering
breaking down of rocks through heat or cold freeze thaw and onion skin e.g. pot holes
chemical weathering
Chemicals in Salt seawater and rainwater will weaken rocks over time