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WOW Words Group 1&2
WOW Words Review of Groups 2-1 and 2-2
Question | Answer |
---|---|
extrusive rock | rock that forms on the surface from lava |
igneous rock | rock formed from cooled magma |
intrusive rock | rock that forms when magma cools deep in the Earth |
lava | molten rock which erupts or flows from a volcano on Earth's surface |
magma | hot liquid rock in the Earth |
molten | made into liquid by heating |
metamorphic rock | rock formed by heat and pressure |
sedimentary rock | layers of sediment that become cemented together |
asthenosphere | the soft layer of the mantle on which the lithosphere floats |
crust | the Earth's top layer: oceanic and continental |
density | the amount of mass of a substance in a given volume |
inner core | very center of the Earth; solid; composed of iron and nickel |
lithosphere | a rigid layer made up of the uppermost part of the mantle and the crust |
mantle | lies beneath the Earth's crust and is very thick; mostly rock |
outer core | the inner point of the Earth that is made up of a very hot liquid material |