Beaches & Spits Formation Flashcards
1
Q
How does longshore drift transport sediment along the coast?
A
Waves hit the shore at an angle, moving sediment in a zigzag pattern down the coast.
2
Q
What are the conditions required for spit formation?
A
A coast with longshore drift, a change in coastline direction, and calm conditions allowing deposition.
3
Q
What is a bar, and how does it form?
A
A bar is a ridge of sediment that extends across a bay, forming when a spit connects two headlands.
4
Q
What is a tombolo, and how does it form?
A
A tombolo is a spit that connects an island to the mainland, formed by sediment deposition.
5
Q
Why do beaches have different profiles in summer and winter?
A
In summer, constructive waves build up beaches; in winter, destructive waves erode them.
