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This is most likely to do with undersea volcanoes. When they erupt they spew out loads of red hot lava which cools extremely quickly due to being at the bottom of the ocean. This quick cooling creates large crystals (as opposed to small crystals when slowly cooled, I think) and a very porous rock. This rock (bear in mind the lava will usually have stuck together) floats to the surface. Time passes and more eruptions add to the rock building up on the surface, slowly creating a rock large enough to support weight. The exposed rock weathers to create a soil very rich in nutrients which enables plants to easily start growing. The plants further erode to rock creating even more soil, which in turn allows for more plant species to grow. Over time an island will form when once there was nothing there but water.

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16y ago
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13y ago

volcanoes create land when they erupt because the molten lava almost immediately dries and hardens when it touches water making the first layer of an island. The volcanoes continue to erupt creating more and more bulk to the island.

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9y ago

Volcanoes erupt with magma, which is molten rock. As this hits cooler air and water, it solidifies, creating rock formations. Enough of this, combined with the erosion water has on rock, creates land masses.

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8y ago

The lava from the volcano cools and turns into rock. thus let it freeze to create a new landform

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The lava produced by volcanic activity can solidify and pile up on the surface or flow into the ocean and cool into entirely new land.

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12y ago

te lava will flow out of the volcano and will quickly cool becoming hard rock. after many years a small rock island will appear. after a many more years, plants will grow and animals will come and it creates an island. like Hawaii is now.

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14y ago

The lava piles up and cools and then more comes and piles up more and the layers make more land.

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11y ago

They do create new land if their material enters water ans builds up above the surface level.

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8y ago

Lava is molten rock. When it cools it forms solid rock. If that rock happens to harden ad the edge of an island or poke above the surface from an underwater volcano, then new land is formed.

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Q: How can lava create new land?
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