Geologic Geologic Features of the Features of the Ocean ShoreOcean Shore
Landforms UnitLandforms UnitIndicator 5-3.4Indicator 5-3.4
55thth Grade Grade
BeachesWaves:•Can wear away land and expose rocky shore•Can deposit new sand
Currents:•Move sand from one location to another
Tides:•Bring in sand, shells, and ocean sediments
Effects of tides on Shore Line
These logs were washed ashore by tides after a storm.
What are some things that you have seen on the beach before that are an effect of tides on our shore
line?
Barrier Islands
Waves:
•Deposit sand on beaches and change the shape of barrier islands
Currents:
•Move sand from one end of the island to the other
Barrier Island before and after a hurricane.
EstuariesAll rivers flow
into the ocean. The area where a river meets
the ocean is an estuary.
Waves:•Deposit sand in the estuaries
•At high tide, ocean water brings in sediments and sea life that feed and nourish life in the estuary.
InletsTides:•As tides change the amount of water will change
Currents and Storms:•Change the shape of an inlet opening
Inlet opening before and after a hurricane.
Important Points• Currents along the shoreline can move sand from
one location to another. These are known as longshore currents.
• Barrier Islands are naturally occurring and function to protect the mainland from the effects of waves on its shore.
• Estuaries have a mixture of freshwater and saltwater.
• Inlets are the water filled spaces between the barrier islands.
Credits
All pictures in this PPT came from www.google.com
All videos in this PPT came from
www.unitedstreaming.com