1. Waves
How are waves connected to our big idea of weathering, erosion, and deposition?

2. Waves What do you need to know? How waves get their energy
How waves cause erosion.
What kind of features result from deposition of waves.

3. Formation of waves
Energy in waves comes from wind that blows across the water’s surface
The energy that water picks up from the wind causes water particles to move up and down as the wave goes by
In deep water, a wave only affects water near the surface.
In shallow water, the wave begins to drag on the bottom due to friction which causes waves to slow down.
The forward moving water is the force that shapes the land along the shoreline

4. Erosion by waves
Waves shape the coast through erosion by breaking down rock and transporting sand and other sediment.
Impact erosion- large waves crash against rocks which can lead to cracks that can get larger over time
Abrasion erosion- A shallow wave picks up sediment like sand and gravel acting like sandpaper wearing away rock.

5. Deposits by wave
Waves shape a coast when they deposit sediment, forming coastal features such as beaches, spits, and barrier beaches.
Deposition occurs when a wave slows down and drops the sediment it was carrying.

6. Video on waves http://www.youtube.com/watch?v=BfKyTAJk9F0
erosion.html#lesson