Spit

Question 1

Define spit

Answer 1

Elongated barrow ridge of land that has one end joined to the mainland and projects put into the sea/ estuary

Usually on drift aligned coast.

Sand/shingle

Question 2

STEP 1

🐚 🌊

Answer 2

Destructive waves erode cliffs by abrasion further down the coast which supply a form of sediment to be transported.

Question 3

STEP 2

💨

Answer 3

Prevailing wind and maximum fetch cause material to be carried along the coast by LSD

LSD is the movement of material along a coast by waves which approach at an angle to the shore but recede directly away from it.

Question 4

STEP 3

🔜🔝

Answer 4

There is a change in direction of coastline.

LSD still continues in same direction.

Question 5

STEP 4

☀️

Answer 5

Deposition will then occur if there is shallow water / weak Currents as water loses velocity / energy due to friction with seabed.

Sheltered area.

Constructive waves.

Large load.

Question 6

STEP 5

☝🏼☝🏼

Answer 6

If conditions continue to be favourable for deposition material will built up above high water mark.

Procuring the spit

Question 7

STEP 6

🌀🌀

Answer 7

The end of the spit begins to curve becoming hooker around as wave refraction carries material into more sheltered water.

Marshland May he created here.

Question 8

STEP 7

🛑

Answer 8

The spit cannot grow all the way across estuary as material is carried seaward to deeper water / stronger currents the conditions no longer present for deposition to occur

Spit stops growing

Question 9

Simple spits

Answer 9

Straight / recurved

No minor spits / recycled ridges along landward edge

Spurn head East Yorkshire

Question 10

Compound spit

Answer 10

Recurved ridges / minor spits on landward side

Sandy hook USA

Question 11

( STEP 7)

🌿🌲🌼🌻

Answer 11

As spits mature, sand dunes can also develop On them.

Stabilised by vegetation - marram grass.

Sheltered areas which low energy waves can deposit fine material leading to salt marshes.