Coasts

Question 1

1-3 formation of sand spit

Answer 1

1 Sandspits form where the coastline changes direction

2 longshore drift transports sand and deposits to an sheltered area

3 longshore drift is when the sea picks up material and drags it across the beach at an upward angle and then down at a right angle

Question 2

4-6 formation of sandspit

Answer 2

4 deposited sand builds up overtime until it is above sea level . This deposition continues until the beach extends over the sea and forms a sand spit

5 sandspits can also form a curved end due to a change in wind direction

Salt marsh or mud flats can form in an area of calm water behind a sandspit

Question 3

formation of a sandbar

Answer 3

1 If a sand spit builds out into a bay, in time it might extend over the bay and connect with the other side of longshore drift

2 longshore drift is when the sea picks up material and drags it across the beach at an upward angle and then down at a right angle

3 the shallow , stagnant water behind a sandbar is called a lagoon

4 after time it may dry out and vegetation can grow here