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Crossword Puzzle Geology

A region of numerous, closely spaced faults
Any activity that includes the movement of magma toward or onto earths surface
vent or fissure in earths surface through which magma and gases are expelled
An instrument that records vibrations in the ground
A long mountain chain under the sea; creates new sea floor
Liquid rock produced under the earths surface
The solid, plastic layer of the mantle beneath the lithosphere
The theory that explains how large pieces of the lithosphere, called plates, move and change shape
An area on earths surface where no direct seismic waves from a particular earthquake can be detected
The boundary between tectonic plates that are colliding
Magma that flows onto earth's surface
a seismic wave that travels through the body of a medium
The boundary between tectonic plates that are moving away from each other
The solid, outer layer of Earth that consists of the crust and the rigid upper part of the mantle
The hypothesis that all continents formed on the same land mass, broke up, and drifted to their present states
The point on earth's surface directly above the focus
Describes magma or igneous rock that is rich in feldspar and silica and that is generally light in color
A seismic wave that travels along the surface; the one we feel
The boundary between tectonic plates that are sliding past each other horizontally
The sudden return of elastically deformed rock to its undeformed shape
A tracing of earthquake motion that is recorded by a seismograph
The process by which new sea floor forms as magma rises to Earth's surface and solidifies at a mid-ocean ridge
The study of the alignment of magnetic minerals in rock, specifically as it relates tot he reversal of Earth's magnetic poles
A large, circular depression that forms when the magma chamber below a volcano partially empties and causes the ground above to sink
Primary wave; the first and fastest wave traveling from an earthquake
The amount of damaged caused by an earthquake
Describes magma or igneous rock that is rich in magnesium and iron nd that is generally dark in color
A volcanically active area of earths surface, commonly far from a tectonic plate boundary
The location in earth along a fault at which the first motion of an earthquake occurs
Secondary wave; the slower wave