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BEACHES PowerPoint Presentation

BEACHES

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BEACHES

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  1. BEACHES By Tessie Koulis and Corey McKay

  2. HOWS IT MADE? BEACHES BEACHES ARE THE RESULT OF WAVE ACTION BY WHICH WAVES OR CURRENTS MOVE SAND OR OTHER LOOSE MATERIALS. BEACH MATERIALS COME FROM EROSION OF ROCKS OFF-SHORE, ASWELL AS FROM HEADLAND EROSION. A CORAL REEF IS A SIGNIFICANT SOURCE OF SAND PARTICLES.

  3. Continued.. A beach's shape depends on how the waves move. Some waves move material up the beach, while others move it down the beach. On sandy beaches, the waves move sand away from the beach, making gentle slopes. When the waves are not strong enough to move the sand away, the beach is steeper. ~~~~~~~~~~~~~~~~~~~~~~~~~~

  4. Sand Dunes Sand dunes are an accumulation of sand that’s been blown into place by wind. Most dunes are covered in a variety of costal plants, which helps stabilize the dunes, however some remain bare. Without costal plants, the dunes would not be able to remain stable. Sand is blown onto already growing plants, which then grow up through the sand. The complex root system of the plants act as a form of netting for the sand, keeping it in place.

  5. Types of Sand Different beaches have different types of sand Lake Powell, Utah California Black Sand Cabo, Baja Mexico Sand Green Sand, Gaum North Shore, Hawaii St. Martin, Caribbean Sand

  6. Beach Life Some organisms that live on a beach. Crabs, insects, and birds feed on material left by the waves. Some small animals dig into the sand to get their food. Birds use beaches to nest, and sea turtles lay their eggs on ocean beaches. Sea grasses and other beach plants grow on areas of the beach and dunes where there is not much activity. Fish Crabs Snails Anemones Clams Mussels Seagulls Small lizards

  7. ANGUILLA BEACH CARIBBEAN

  8. The End ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~