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Plate Tectonics*

Across
the movement of heated material due to differences in density caused by differences in temperatures.
When two plates that are made of continental lithosphere collide, the colliding edges crumple and thicken, which cause uplift that forms large _____ _____.
Short segments of a mid-ocean ridge are connected by transform boundaries.
a zone of active volcanoes that encircles the Pacific Ocean is known as the _____ _____ _____.
a narrow valley that forms where the plates separate at a divergent boundary is called a _____ _____ _____.
the theory that explains why and how continents move.
hot fluid or semifluid material below or within the earth's crust from which lava and other igneous rock is formed by cooling.
the point on the earth's surface vertically above the focus of an earthquake.
the narrow valley that forms where the plates separate is a _____ _____.
Down
the theory that explains how large pieces of the lithosphere, called plates, move and change shape.
the boundary between tectonic plates that are colliding.
the boundary between tectonic plates that are moving away from each other.
the process by which Earth's crust breaks apart; can occur within continental crust or oceanic crust.
the solid, plastic like layer of the mantle beneath the lithosphere; made of mantle rock that flows very slowly, which allows tectonic plates to move on top of it.
tectonic plates that form the outermost layer of the Earth's crust and uppermost part of the Earth's mantle.
the location of these can help scientists identify the locations of plate boundaries.
a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action.
the solid, outer layer of Earth that consists of the crust and the rigid upper part of the mantle.
the supercontinent that formed many years ago.
hot molten or semifluid rock erupted from a volcano or fissure, or solid rock resulting from cooling of this.