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Beach A beach is a narrow, gently sloping strip of land

A beach may be a narrow, gently sloping strip of land that lies along the sting of an ocean, lake, or river. Materials like sand, pebbles, rocks, and seashell fragments cover beaches.

Most beach materials are the products of weathering and erosion. Over a few years , water and wind wear away at the land. The continual action of waves beating against a rocky cliff, as an example , may cause some rocks to return loose. Huge boulders are often worn town to tiny grains of sand.

Beach materials may travel long distances, carried by wind and waves. because the tide comes in, as an example , it deposits ocean sediment. This sediment may contain sand, shells, seaweed, even marine organisms like crabs or sea anemones. When the tide goes out, it takes some sediment with it.

Tides and ocean currents can carry sediment a couple of meters or many kilometers away. Tides and currents are the most way beaches are created, changed, and even destroyed, because the currents move sediment and debris from one place to a different .

Beaches are constantly changing. Tides and weather can alter beaches a day , bringing new materials and removing others.

Beaches also change seasonally. During the winter, storm winds toss sand into the air. this will sometimes erode beaches and make sandbars. Sandbars are narrow, exposed areas of sand and sediment just off the beach. During the summer, waves retrieve sand from sandbars and build the beach copy again. These seasonal changes cause beaches to be wider and have a mild slope within the summer, and be narrower and steeper within the winter.

Beach Berms

Every beach features a beach profile. A beach profile describes the landscape of the beach, both above the water and below it. Beaches are often warm, and rich in vegetation like palm or mangrove trees. Beaches also can be barren desert coastlines. Other beaches are cold and rocky, while beaches within the Arctic and Antarctic are frozen most year.

The area above the water, including the intertidal zone, is understood because the beach berm. Beach berm can include vegetation, like trees, shrubs, or grasses. the foremost familiar characteristic of a beach berm is its sort of sand or rock.

Sandy
Most beach sand comes from several different sources. Some sand could also be eroded bits of a rocky reef just offshore. Others could also be eroded rock from nearby cliffs. Pensacola Beach, in the U.S. state of Florida, for instance, has white, sandy beaches. Some sand is eroded from rocks and minerals within the Gulf of Mexico. Most sand, however, is formed of small particles of weathered quartz from the Appalachians , many kilometers away.

The sandy beaches surrounding Chameis Bay, Namibia, also are filled with quartz and seashells. However, the beaches of Chameis Bay contain another sort of rock—diamonds. Mining companies have dug mines both on the beach and offshore to excavate these precious stones. Other gems, like sapphires, emeralds, and garnets, are present on many beaches throughout the planet , as tiny grains of sand.

Rocky
Some beach berms aren’t sandy in the least . they’re covered with flat pebbles called shingles or rounded rocks referred to as cobbles. Such beaches are common along the coasts of British Isles. Hastings Beach, a shingle beach on the southern coast of England, has been a dock for fishing boats for quite thousand years.

 

 

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