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Science

Earths Structures Vocabulary

TermDefinition
Tectonic Plates a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithospheres.
Crustal Plate a rigid layer of the Earth’s crust that is believed to drift slowly across the surface of the Earth over time
Ocean plates a layer of the Earth’s crust that is at the bottom of the ocean that is believed to drift slowly across the Earth over time
Ocean Basin anywhere on the earth that is covered by seawater
Primary waves seismic waves, which are the first waves to appear on a seismograph during an earthquake
Secondary waves also known as shear waves; waves that move through the body as opposed to surface waves
Surface waves a seismic wave that is trapped near the surface of the earth
Ring of Fire Ring of Fire: an area in the basin of the Pacific Ocean where a large number of earthquakes and volcanoes occur
Volcanoes a rupture in the crust of that allows hot lava, volcanic ash, and gases to escape from below the Earth’s surface
molten liquefied by heat
Igneous rock rock formed from the cooling and solidification of magma or lave
metamorphic rock rock formed from the transformation of preexisting rock through heat and pressure, that causes a physical or a chemical change.
sedimentary rock rock formed from materials and mineral collecting and forming together
Rock samples Rock samples
Mountains a large natural elevation of the earth's surface rising abruptly from the surrounding level
Lava hot molten or semifluid rock erupted from a volcano
Magma hot fluid or semifluid material below or within the earth's crust from which lava and other igneous rock is formed by cooling
inner core the innermost part of the Earth
Created by: pettigv
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