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Plate Tectonics .

QuestionAnswer
The theory that Earth's crust and upper mantle are broken into sections is called ________. Plate tectonics.
Plates are composed of the ________. Crust and part of the upper mantle.
The lithosphere is composed of the ________. Crust and upper mantle.
Plates float on the ________. Asthenosphere.
Plates can _________. Pull apart, collide, and move past one another.
The boundary between two plates that are moving apart is a ______ boundary. Divergent.
When ocean plates collide with continental plates, the denser ocean plate _________. Sinks.
The area where a plate descends is a ________. Subduction zone.
A _______ is created where one one plate moves under another. Trench.
A subduction plate melts, forming ________. Magma and volcanic mountains.
Scientists think plates are moved by _________. Volcanoes.
A place where plates slide past one another is a ________. Transform fault.
The San Andreas fault is a _______. Transform fault.
The Himalayas were formed at a _________. Convergent boundary.
The dense center of iron and nickel. the Core
Inner and outer core. the two parts of the core
Solid. the inner core
Liquid. the outer core
Middle layer comprised of silicon, oxygen, iron and magnesium. the mantle
solid and rocky layer; thinnest layer. Crust.
Proposed by Alfred Wagner states all continents were once joined (Pangaea). Continental drift theory.
Laurasia and gonwanda land 2 mega continents.
Created by: hilena_
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