Ocean Waves 6 th Grade. Ocean Waves 9_ocean_waves/ocean_waves.html#slide

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Presentation transcript:

Ocean Waves 6 th Grade

Ocean Waves 9_ocean_waves/ocean_waves.html#slide 9_ocean_waves/ocean_waves.html#slide

What is a GOOD wave definition: Wave: the movement of energy through a body of water Usually begins with WIND

The SIZE of waves depend on what? Strength of the wind Length of time it blows Distance over which the wind blows

Wave energy Surface water moves toward shore, but DEEP water doesn’t ENERGY of the deep wave moves to share, but the water remains in place

Waves –circular motion

What is Longshore Drift? As waves come into the shore, water washes up at the beach at an ANGLE, carrying the sand grains. The water and sand then run straight back down to the beach.

Longshore Drift

Groins are used to help control longshore drift

Rip Currents: What are they and how do they occur? A rush of water that flows rapidly back to sea through a narrow opening As the sandbar grows, it traps the water flowing along the shore –water can break through the sandbar and flow back down to the ocean bottom

Rip currents/tides pBg pBg

Rip Currents

Rip Currents/Tides