How are islands formed?
Islands Build Themselves
How are islands formed?
There are islands everywhere — tiny dots in the ocean, big chunks of jungle, rocky bumps in a lake. They look like someone dropped land into the water and walked away. But nobody dropped them. Islands build themselves, and they have three very different ways of doing it.
The loudest way is volcanoes. Deep under the ocean, the Earth's crust has cracks, and hot melted rock called magma pushes up through them like toothpaste squeezed from a tube. It piles up on the seafloor, layer after layer, year after year, until the pile breaks the surface and becomes an island. Hawaii is a volcano island. It's still growing.
