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Beaches, Barrier Islands, Inlets, and Estuaries
Transcript of Beaches, Barrier Islands, Inlets, and Estuaries
5. E. 3. :
The student will demonstrate an understanding of how natural processes and human activities affect the features of Earth's landforms and oceans.
South Carolina Science Indicator
Barrier Islands Baby!
•pieces of land surrounded by water on all sides.
Islands with sandy beaches are called barrier islands.
• naturally occurring and function to protect the
mainland from the effects of waves on its shore.
•As the waves deposit sand on the beaches,
the shapes of the barrier islands change.
•Currents can move the sand from
one end of the island to the other.
What are Estuaries?
• The area where a river meets the ocean is known as an estuary.
• All rivers flow into the oceans.
• a mixture of freshwater and saltwater
• Waves can deposit sand in the estuaries.
• At high tide, ocean water brings in sediments and sea life that feed and nourish life in the estuary.
Let me in the Inlet!
• water-filled spaces between the barrier islands.
• As the tides change, the amount of water in the inlet will change.
• Ocean currents and storms can change the shape of an inlet opening.
How can Barrier Islands,
Inlets, Estuaries, and
Have they already changed?
• The shoreline, or coast, is the area where the land meets the ocean.
• some shorelines are rocky and some are made of sand
• always changing because of wind and water
• Waves can wear away the land and expose a rocky shore or the waves can deposit sand along the shore and form a beach. If the waves reach the beach at an angle, the sand is moved along the coast.
• Currents can move sand from one location to another.
• Tides can bring in sand, shells, and ocean sediments at high tide and leave them behind when the tide goes out.
• Storms can cause waves that remove sand from beaches.
3 things can
Are you in or out?