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Plate Tectonics

Across
a volcanic cone composed of intermingled masses or alternate layers of lava and fragmental material.
this mechanical sense, are commonly known as either Love waves (L waves) or Rayleigh waves.
The lithosphere, which is the rigid outermost shell of a planet, is broken up into tectonic plates.
a broad, domed volcano with gently sloping sides, characteristic of the eruption of fluid, basaltic lava.
two tectonic plates that are moving away from each other.
the upper layer of the earth's mantle, below the lithosphere
tectonic plates or fragments of the lithosphere move toward one another and collide.
a long high sea wave caused by an earthquake, submarine landslide, or other disturbance.
the rigid outer part of the earth, consisting of the crust and upper mantle.
the name given to an ancient supercontinent.
a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity
a wave motion in a solid medium where the medium moves perpendicular.
the degree of compactness of a substance.
a sudden and violent shaking of the ground, sometimes causing great destruction.
Down
the Earth's innermost part. It is primarily a solid ball with a radius of about 1,220 kilometres
an elastic wave in the earth produced by an earthquake or other means.
a supercontinent that existed during the late Paleozoic and early Mesozoic eras.
a cone formed around a volcanic vent by fragments of lava thrown out during eruptions.
the theory that the solar and stellar systems were developed from a primeval nebula.
the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
a type of elastic wave
places where plates slide sideways past each other.
a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust.
a numerical scale for expressing the magnitude of an earthquake on the basis of seismograph oscillations.
the Earth is a fluid layer about 2,300 km (1,400 mi) thick and composed of mostly iron and nickel
a crack in the Earth's crust.