4.3 Coastal Landscapes (extra) Flashcards
What is it called when a spit connects to nearby land?
A bar
What are the two main types of mass movement?
Rock slides and rotational slumping
How is a spit formed?
Through long shore drift when deposition occurs. Debris is deposited and after time due to wind changes new land forms
What is saltation?
Hopping motion done by smaller rocks on the sea bed which are too heavy to be suspended.
What is traction?
Traction is the rolling of large pebbles along the sea bed
What is suspension?
When small particles are carried within water
What is solution?
Dissolved chemicals often derived from limestone or chalk.
What is long shore drift?
When eroded sediment is picked up from the sea bed and moved by the waved by the swash and backwash and deposites its debris on the shore
What is a concordant coastline and give an example of the rock type?
When one rock is parallel to the sea such as limestone in Swanage. Usually there are cliffs on the coast and no headlands and bays.
