WAVES HOW ARE WAVES CONNECTED TO OUR BIG

WAVES • HOW ARE WAVES CONNECTED TO OUR BIG IDEA OF WEATHERING, EROSION, AND DEPOSITION?

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.

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

EROSION BY WAVES • Waves shape the coast through erosion by breaking down rock and transporting sand 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 gravel acting like sandpaper wearing away rock.

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.

VIDEO ON WAVES • HTTP: //WWW. YOUTUBE. COM/WATCH? V=BFKYTAJK 9 F 0 • HTTP: //EDUCATION-PORTAL. COM/ACADEMY/LESSON/WAVES-TYPES-FEATURES -EFFECT-ON-EROSION. HTML#LESSON