5th Grade Inside Earth Chapter 1 Section 3-5

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Can you match the terms from Chapter 1 Section 3-5 with their descriptions?

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the theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle
a section of the lithosphere that slowly moves over the asthenosphere, carrying pieces of continental and oceanic crust
the process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary
the process by which molten material adds new oceanic crust to the ocean floor
a deep valley that forms where two plates move apart
a well-tested concept that explains a wide range of observations
the name of the single landmass that broke apart 200 million years ago and gave rise to today's continents
a plate boundary where two plates move toward each other
a plate boundary where two plates move away from each other
a plate boundary where two plates move past each other in opposite directions
a trace of an ancient organism that has been preserved in rock
a deep valley along the ocean floor beneath which oceanic crust slowly sinks toward the mantle
a device that determines the distance of an object under water by recording echoes of sound waves
an undersea mountain chain where new ocean floor is produced
a break in Earth's crust where masses of rock slip past each other
the hypothesis that the continents slowly move across Earth's surface

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