CHAPTER 12 Key Terms
Match each of the terms on the left with its definition on the right. Click on the term first and then click on the matching definition. As you match them correctly, they will move to the bottom of the activity.
accreted terrane active continental margin anticline collision continental drift continental volcanic arc convergent plate boundary divergent plate boundary fault fold Gondwana hot spot Laurasia mantle drag mantle plume orogenesis orogenic belt Pacific Ring of Fire Pangaea Panthalassic Ocean passive continental margin plate boundary plate tectonics ridge push rift rift valley slab pull subduction syncline transform plate boundary volcanic island arc Wadati- | A long chain of volcanoes formed on the margin of a continent above a subducting plate. Convergence of the continental crust of two different plates. A fracture in the crust where movement and earthquakes occur. A margin of a continent that follows a plate boundary, typically characterized by a deep- A mostly stationary column of hot rock that extends from deep in the mantle up to the base of the lithosphere. Mountain building. A plate boundary where one lithospheric plate slips laterally past another. The process by which the weight of subducting oceanic lithosphere accelerates plate movement by pulling the plate deeper into the mantle. A landmass that resulted when Pangaea split about 200 million years ago, which consisted of modern- A theory addressing the origin, movement, and recycling of lithospheric plates and the landforms that result. A sloping pattern of increasingly deep earthquake foci found in a subduction zone. A zone of volcanically active mountain chains resulting from subduction on the margins of the Pacific Ocean. A region where two lithospheric plates move toward each other. A chain of islands formed where oceanic lithosphere of one plate is subducting beneath oceanic lithosphere of another plate. A region where two lithospheric plates move apart. A landmass that resulted when Pangaea split about 200 million years ago, which consisted of modern- The margin of a lithospheric plate. A margin of a continent that does not coincide with a plate boundary, typically characterized by a broad, sloping continental shelf. The process by which magma rising along a mid- A location at the base of the lithosphere where high temperatures cause the overlying crust to melt. A fold in the crust with a U- A mass of crust that is transported by plate movement and fused onto the margin of a continent. The single large ocean that surrounded Pangaea 300 million years ago. A region where continental crust is stretching and splitting. A theory proposed by Alfred Wegener stating that continents move slowly across Earth’s surface. A linear valley with volcanoes formed by rifting of continental crust, sometimes filled with freshwater to form a deep lake. A wrinkle in the crust resulting from deformation caused by geologic stress. A fold in the crust with an archlike ridge. The process in which oceanic lithosphere bends and dives into the mantle beneath another lithospheric plate. A linear mountain range. The supercontinent formed about 300 million years ago by the fusion of all continents. The dragging force between the asthenosphere and the overlying lithosphere. |