Examlex
Write the word or phrase that best completes each statement or answers the question.
Solve for x.
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Pumice
Volcanic rock, especially of felsic or intermediate composition, containing many vesicles (holes) formed by expanding gases in magma.
Lava
Molten rock that has been expelled from a volcano during an eruption and solidifies as it cools on the Earth's surface.
Ash
Fine particles of rock, minerals, and volcanic glass created during volcanic eruptions and carried through the air.
Composite Cone
A type of volcano built from layers of lava flows, tephra, and volcanic ash.
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