PLATE TECTONICS Crossword

a geological process in which one edge of a crustal plate is forced sideways and downward into the mantle below another plate
the uppermost layer of the oceanic portion of a tectonic plate.
the theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle
surface along which rocks move when they pass their elastic limit and break
a plate boundary where two plates move away from each other
A deep valley that forms where two plates move apart.
a plate boundary where two plates move toward each other
when two tectonic plates slide past each other horizontally
the solid, outer layer of the earth that consists of the crust and the rigid upper part of the mantle
the soft layer of the mantle on which the lithosphere floats
the hypothesis that the continents slowly move across Earth's surface
the transfer of heat by the movement of a fluid
large supercontinent that existed 250 million years ago
The thick part of the earth's crust that forms the large landmasses
the flow that transfers heat within a fluid
an undersea mountain chain where new ocean floor is produced
the process by which molten material adds new oceanic crust to the ocean floor
deep valley along the ocean floor beneath which oceanic crust slowly sinks towards the mantle
form at continental-continental convergent boundaries
a mass of molten rock formed at the depth, including dissolved gases and crystals
A researcher that discovered the continental drift.
mountains formed in part by igneous activity associated with subduction of oceanic lithosphere beneath a continent
a depression in the seafloor produced by subduction process
a chain of volcanoes that develop parallel to a trench
a device that is used to record earthquake waves