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Dynamic Planet Final Review Place on the Earth where seismic waves are first felt. Location in the Earth where an earthquake starts. large ocean wave: a large destructive ocean wave caused by an underwater earthquake or another movement of the Earth's surface something that represents or simulates something else The movement, formation, or re-formation of continents described by the theory of plate tectonics A body wave that can pass through all layers of the earth. It is fastest of all seismic waves. A supercontinent made up of all the world's present landmasses A model made in your mind. Process, in which 2 oceanic plates are spreading apart. Is the process that takes place at convergent boundaries by which one tectonic plate moves under another tectonic plate and sinks into the mantle as the plates converge. circulatory movement in a liquid or gas, resulting from regions of different temperatures and different densities rising and falling in response to gravity A body wave that can only travel through solids; slowest body wave. Two plates that are sliding past one another. Two plates that are moving apart from one another. The layer of the Earth that is a liquid. It is composed of iron and nickel. molten rock material within the earth How fast the plates move Thinner, younger crust, more dense crust. Thicker, older, less dense crust The deflection of a ray of light or wave due to changes in its velocity as it passes from one medium to another. Proposed the theory of continental drift in 1912. A fracture or fracture zone along which there has been displacement of one mass of rock relative to another, parallel to the fracture. Plates that are moving away from one another. Plates that are moving toward one another.