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Krieg - Stack #1

Krieg - Plate Tectonics and Continental Drift

QuestionAnswer
Divergent Boundary Where plates separate
Convergent Boundary Where plates collide
Transform Boundary Where plates slide past one another
subduction Where one plate goes under another at a convergent boundary
Hot spot Large magma chanber under the Earth's crust where volcanic activity creates new land
inner core layer made of solid iron and nickel at the Earth's center
outer core layer made of liquid iron and nickel
mantle middle layer of the Earth where the Asthenosphere is found
asthenosphere plastic part of the mantle that "flows" and causes the Earth's plates to move
Convection Current Circulation of asthenosphere caused by rising heat in the mantle
crust outer layer of the Earth where we live
Sea Floor Spreading Ocean bottom separating at a divergent boundary.
__________________ occur at subduction zones volcanoes
________________ are typically formed at convergent boundaries Mountains
Earthquakes can occur at ____________ boundaries All
Magma liquid rock under the Earth's crust.
Lava liquid rock on the Earth's surface.
Pangaea Super-continent that existed about 200 million years ago.
Alfred Wegener The scientist who proposed the idea of continental drift.
Continental Drift The theory that all of the Earth's continents where once joined and they have slowly drifted apart.
Plate Tectonics Theory that the Earth's plates are moving caused by convection currents in the asthenosphere.
Harry Hess scientist that mapped the ocean floor during World War 2 which resulted in the discovery of the sea floor spreading.
Mid-Ocean Ridge divergent boundary at the bottom of the sea floor.
Plates move about 1 to 2 _________ per year. inches
Old crust is pushed back into the mantle and destroyed at a _____________ zone. Subduction
Evidence of Continental Drift Matching Fossils, Continents fit like jigsaw pieces, and Matching rocks
Nickname for the edge of the Pacific plate where there are many of the Earth's active volcanoes Ring of Fire
Created by: skrieg
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