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The Features of Earth's Surface, inside Earth. As it rises, it gives…
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inside Earth. As it rises, it gives off-gases. These gases push on Earth's surface and cause it to bulge. When the pressure gets very high, the gas explodes from the ground. The magma that
shoots out of the volcano is called lava. When the volcano erupts, or releases lava, again and
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again, the lava builds up to from a mountain. Sometimes many years pass between eruptions.
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rock and leaves behind harder rock. After a long, long time, the harder rock may stand alone as
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mountains formed by volcanoes. As some of the large cracks between the ridges widen, magma
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risen above the surface of the ocean. Hawaii was formed this way. Some of Hawaii's volcanoes are still alive or erupting
The surface of Earth is always changing. At one time, all land was joined together in one
place, and the ocean covered the rest of the world. As the plates slowly moved, the land broke apart.
Ocean water moved between the masses of land. Over a long period of time, these masses of land. over a long period of time, these masses became the continents we know today.