Beaches Flashcards
1
Q
When do beaches fomr
A
constructive waves deposit sediment on the shore
2
Q
What are berms and how do they form?
A
Ridges of sand and pebbles found at high tide marks.
Formed by deposition of coarse material at the limit of swash
3
Q
What are runnels and how do they form?
A
They are grooves in the sand running parallel to the shore.
Formed by backwash draining to the sea
4
Q
What are cusps and where do they develop?
A
Crescent-shaped indentations that form on beaches of mixed sand and shingle.
They develop where waves break parallel to the beach and where there’s a large tidal range
