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Plate Tectonics & Events
Terms in this set (30)
an opening in Earth's surface that erupts gases, ash, and lava
the "Land of Fire and Ice", is located on the mid-ocean ridge
the world's most active volcano; is located on the Island of Hawaii
deep inside the Earth, heat and pressure melt rocks into what?
magma that reaches the surface of the Earth
the opening in the ground from which magma flows; forms a volcano
the steep bowl-shaped area around a volcano's vent
The mid-ocean ridge is formed by what type of boundary?
Ring of Fire
a major area of volcanoes and earthquakes that surrounds the Pacific Ocean. Most of Earth's surface volcanoes are here.
he came up with the idea of Continental Drift and Pangaea
plant fossils found by Wegener to help prove continental drift
freshwater dinosaur fossils that Wegener used to help prove continental drift
super continent that Wegener said existed over 200 million years ago
evidence of these giant rivers of ice was found in Africa, supporting the idea of Pangaea.
scientists use these to help map the ocean floor.
he proposed the theory of sea-floor spreading which explained continental drift.
these were found near the mid-ocean ridge by the Glomar Challenger.
huge sections of the lithosphere
the crunchy part of the Earth; the crust and the very top of the mantle
this is the nickname for the area between the mantle and crust where seismic waves speed up and slow down as they pass through.
the gooey, plasticlike part of the mantle that the plates slide upon.
the edges of the plates, where they meet.
these are believed to be causing the plates to move. Heat from the mantle rises towards the bottom of the crust.
when two plates move away from each other, they spread apart.
when two plates collide, or move towards each other.
when two plates slide past each other.
area where an ocean plate slides under another plate and melts.
the type of boundary that causes a subduction zone
caused by convergent boundary between two pieces of continental crust.
produce seismic waves that are used by scientists to study the inside of the Earth.
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