Crust - Solid outermost layer of the Earth, Tectonic plates - Large sections of the Earth's crust and upper mantle, Plate boundary - Place where two tectonic plates meet, Earthquake - A tremor or shock of the surface of the Earth, Volcano - A mountain created by eruptions, Destructive margin - A plate boundary where two plates meet and one is subducted under the other. The plate underneath melts back into the mantle., Constructive margin - A plate boundary where two plates are moving away from each other, Convection - Heat in gas or liquid transfers to cooler places via upward motion, Magma - Molten (melted) rock under the Earth's surface, Subduction - Oceanic plate is forced under the continental plate and goes into the mantle and melts, Ocean trench - A long narrow valley in the ocean floor formed by subduction, Fold mountain - Mountains formed by folding layers of upper crust as two continental plates collide and neither subducts, Ocean ridge - Series of underwater volcanic mountains, Rift valley - Valley formed when two plates are moving away from each other,

Tectonic processes and landforms

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