Plate Tectonics Crossword

an undersea mountain chain where new ocean floor is produced
a device that determines the distance of an object under water by recording echoes of sound waves
the process by which molten material adds new oceanic crust to the ocean floor
a deep valley along the ocean floor beneath which oceanic crust slowly sinks toward the mantle
the process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle
a section of the lithosphere that slowly moves over the asthenosphere, carrying pieces of continental and oceanic crust
a well-tested concept that explains a wide range of observations
the theory that pieces of earth's lithosphere are in constant motion, driven by convection currents in the mantle
break or crack in Earth's lithosphere along which the rocks move
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
a plate boundary where two plates move past each other in opposite directions (slide)
the direct transfer of energy through space by electromagnetic waves
the direct transfer of thermal energy from one substance to another substance that it is touching
the transfer of thermal energy by the movement of a fluid
the amount of mass of a substance in a given volume
the movement of a fluid, caused by differences in temperature, that transfers heat from one part of the fluid to another
the hypothesis that the continents slowly move across Earth's surface
the name of the single landmass that broke apart 200 million years ago and gave rise to today's continents