Molten rock is rock heated to a temperature that is sufficient to turn it into a thick liquid. Molten rock often is associated with lava from a volcano. Additionally, molten rock exists below the surface of the Earth. More » Science Earth Science Layers of the Earth

Hot molten rock that forms underground is known as magma. During a volcanic eruption, the magma that is ejected onto the surface is referred to as lava. The solid form of magma after it has cooled down is called an igneo... More » Science Earth Science Volcanoes

Underground molten rock is referred to as magma or lava, which cools to form igneous rock. Igneous rock is important because it gives scientists important clues about what is happening inside the Earth. More » Science Earth Science Plate Tectonics
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The molten rock below the Earth’s surface is known as magma. Magma is a combination of a molten and semi-molten rock mixture that is extremely hot. Magma is between 1,292 and 2,372 degrees Fahrenheit, or 700 and 1,300 de... More » Science Earth Science Layers of the Earth

Instead of having a rocky surface, Jupiter is gaseous up to the inner core, which is either rock or a molten liquid. The gases in its atmosphere include hydrogen and helium. More » Science Astronomy Planets

The elements largely composing the rock and soil on Earth's surface are oxygen, silicon, iron and magnesium. Water, covering about 70 percent of Earth's surface, is composed largely of hydrogen, oxygen, sodium, chlorine ... More » Science Earth Science Layers of the Earth

As part of the earth's upper mantle, the asthenosphere is thought to contain rock material made from peridotite, eclogite, olivine, spinel, garnet and pyroxene. The asthenosphere is about 50 to 124 miles beneath the eart... More » Science Earth Science Layers of the Earth