How does islands form




















In areas where the plates come together, sometimes volcanoes will form. The Hawaiian Islands were formed by such a hot spot occurring in the middle of the Pacific Plate. While the hot spot itself is fixed, the plate is moving. A day later, as the eruption continued, lava broke the surface to form land.

The new island was named Surtsey, after the Norse god of fire. Greenland, in the Arctic Ocean, is the world? As huge as it is, few people live there because it is almost permanently covered in snow and ice.

A coral reef is formed from the hard, shelly remains of coral polyps. These tiny creatures live in large colonies on rocks in shallow, sunlit water, such as the top of a seamount. When they die, their chalky, tube-shaped skeletons remain, and new, young coral grows on top.

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We will discuss three ways islands are formed. When you take a look at the islands of Hawaii, they were formed by volcanoes. Volcanoes would keep erupting causing land to start to form under water. This land would keep on rising up as the volcano erupted.

Over thousands of years, the land would go above the water, thus creating land that is surrounded by water or another word, an island. Islands can also be formed when continental plates collide. When they collide they push land up creating an underwater mountain that goes above land. This land, when surrounded by water, is called an island.

Another way an island landform can be made is through deposits of sand that came from erosion. When sand and other debris are picked up from a water current through erosion, it can be deposited in certain areas. Over time this land creates an island. Did you know that islands can also be man made?



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