Plate Tectonics Vocabulary
Presentation
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Science
•
7th Grade
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Practice Problem
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Hard
Whitney Smith
Used 14+ times
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13 Slides • 0 Questions
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Plate Tectonics Vocabulary
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transform boundary
the plates SLIDE PAST EACH OTHER causing EARTHQUAKES
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Tectonic Plates
the idea that Earth's crust is divided into several plates that glide over the plastic-like mantle
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seafloor spreading
two OCEANIC crusts move APART and CREATE MOUNTAINS under the sea; NEW CRUST is created when HOT MAGMA RISES from the mantle and SPREADS across the SEA FLOOR
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convergent boundary
the plates COLLIDE or COME TOGETHER
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divergent boundary
the plates DIVIDE or MOVE APART
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rift valley
two CONTINENTAL crusts DIVERGE and NEW FLOOR is created; over millions of years, it will eventually fill with water.
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San Andreas Fault
EXAMPLE of a TRANSFORMATION FAULT
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trench
formed at a SUBDUCTION zone
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Ring of Fire
a STRING OF VOLCANOES AND EARTHQUAKES around the edges of the PACIFIC ocean
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Subduction Zone
the OCEANIC crust goes BELOW the CONTINENTAL crust because it is more DENSE; VOLCANOES form on the continents; a TRENCH forms at the place where the plates COLLIDE
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Mid Atlantic Ridge
an EXAMPLE of a mid-ocean ridge; part of the LONGEST MOUNTAIN RANGES in the world
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Plate boundary
where TWO TECTONIC PLATES MEET
Plate Tectonics Vocabulary
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