1. Wave Erosion and Deposition

2. I. How Waves Form
The energy in waves comes from WIND that blows across the water.
As the wave gets into shallow water, it slows down and drags the bottom.

3. II. Erosion by waves
Waves shape the coast through erosion by breaking down rock and transporting sand and other sediment.
How waves erode land
1. impact- large waves hit shore with great force and wave breaks rocks apart.
2. abrasion- picks up sediment and when wave hits land, the sediment wears away rock like sandpaper wearing away wood.

4. B. Erosion landforms
headland- part of the shore that sticks out into the ocean. The harder rock resists erosion.
Sea cave
Wave cut cliff- base of a cliff is eroded and rock above collapses.
Sea arch
Sea stack

5. Wave Cut Cliffs

6. III. Deposits by Waves Beach- area of sediment washed along shore.
a. most sediment comes from rivers that carry eroded rocks into ocean.
2. Longshore drift- sediment washes down the beach with the current.

7. 3. spit- beach that projects like a finger out into the water. 4
3. spit- beach that projects like a finger out into the water. 4. sandbar- ridges of sand build up parallel to shore. 5. Barrier beach- waves pile up large amts. Of sand forming a long, narrow island parallel to the coast.

8. Beach Diagram