Andy Foster, Andrew Wang, Kyle Weaver, and Zac Schleich

What is Shoreline Erosion? Shoreline erosion! Shoreline erosion- when waves hit rocks and erode them to make sea features.

Questions for You Why do we have beaches?

Why do we have beaches? Why do waves grow taller?

Wave Energy Waves can travel 1,000s of kilometers Strength and length of wind affects a wave’s size Waves come in groups called wave trains

The Pounding Surf Waves grow tall when in shallow water It can’t keep itself up, and collapses Breaking waves release lots of energy Water enters cracks in rocks and breaks parts away

Wave Erosion Sea Stacks- offshore columns of rock that were once connected to the mainland Sea Arches- they form when waves continue to erode a sea cave Sea Caves- form when waves cut large holes into fractured or weak rock along the base of sea cliffs Headlands- finger-shaped projections that form when cliffs made of hard rock erode slower than surrounding rock Wave-cut terraces- form when a sea cliff is worn back, producing a nearly level platform beneath the water at the base of the cliff

Beaches Beach- any area of the shoreline made up of material deposited by waves. Color and texture of the beach is the same as the source. Some beaches are made of bright quartz, some are made of volcanic ash, and some are made from broken seashells to name a few examples.

Waves moving at an angle at the shoreline push water along the shore which creates longshore currents. When waves erode material from the shoreline, longshore currents transport the material offshore. That creates a barrier spit or a sandbar. CycleofOffshoreDeposits

Shoreline: the boundary between land and a body of water Waves play a major role in building up and breaking down a shoreline. Development of shorelines can cause major property loss, and scientists work to keep it so that it does not destroy habitat of beach animals and to keep our beaches clean and functional. Most shoreline erosion takes place during major storms. Today the coastlines of the world's continents measure about 193,000 miles. More powerful waves tend to erode more sand than they carry. Predicting shoreline erosion is important to beach-development projects.

Types of Beach Sands Light-colored sand- Most common type of sand. Made up mostly of the mineral quartz. Fine, white-colored-sand- Found on tropical islands. Made of fine, white coral material. Black sand- Comes from eroded volcanic lava. Rocky sand- Formed in areas where stormy seas are common. Made of pebbles and boulders. Light-colored sand Black sand Rocky sand Fine, white-colored sand

Answers Why do we have beaches? Answer: We have beaches because waves carry rock to the shorelines, and that makes beaches.

Answers Why do we have beaches? Answer: We have beaches because waves carry rock to the shorelines, and that makes beaches. Why do waves grow taller? Answer: The bottom of the wave drags against the ocean floor when it is in shallow water causing the wave to grow taller.

Credits Produced by Andrew Wang, Andy Foster, Kyle Weaver, and Zac Schleich Writing and research by Andrew Wang, Andy Foster, Kyle Weaver, and Zac Schleich. Pictures from Google Image Search by Andrew Wang, Andy Foster, Kyle Weaver, and Zac Schleich. Directed by Mrs. Teaman. WE ROCK!!! And so do you… if you listened to our presentation!!!