Coastal erosion - geography A level
A definition of coasts is
| Draggable item | arrow_right_alt | Corresponding Item |
|---|---|---|
Destructive wave | arrow_right_alt | Maximum distance wind blows over the sea |
Fetch | arrow_right_alt | The incoming wave, comes in at the same angle the wind blows |
Swash | arrow_right_alt | The wave that returns to the sea, always at 90 degrees due to gravity |
Backwash | arrow_right_alt | Builds up the beach as the swash has energy to bring in sediment, but the backwash is weak so it gets left behind. |
Contructive wave | arrow_right_alt | Removes sediment from a beach as the backwash is strong enough to entrain particles and return them to the sea. |
Constructive waves have a short wave length
Constructive waves have a short wave height
Destructive waves are more frequent than constructive waves
The trough is the top of the wave
Wave period is the time from trough to trough OR crest to crest
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