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Earth's Layers and Tectonic Plates

Name_______________________
Complete the crossword and added fill in the blank words to help study for your test!
Across
Part of the cold mantle detaches and sinks into the mantle, new crust is pushed up but does not break.
What explains the movement of landmasses on Earth? Also known as large slabs of rock made of the crust and upper mantle.
The largest layer beneath the asthenosphere is the ____
The Earth is protected from the sun's cosmic rays by the ____
The ___ is composed of the crust and upper mantle
The upward movement of Earth's surface
Says all continents were once connected, but drifted apart
Formed when magma cools and hardens repeatedly
The ___ is a solid layer of nickel and iron under extreme pressure.
Rocks are soft enough to flow within the ____
Scientist have learned about the Earths interior by studying ____
The part of the core that is liquid is the ____. Also the layer that helps produce Earth's magnetic field.
Areas created when a heavier plate sinks under a light plate
When rocks deep within Earth begin to fold, as continental plates collide, they move to the surface
Parallel forces acting in opposite directions
Down
Magma rises from a gap creating new oceanic crust and old oceanic crust moves toward the sides.
Convection currents circulate heat which allow tectonic plates to move. Where are these currents located?
When 2 plates are pulled apart
Blocks of rock move up and down along faults.
When a river cuts through a plateau
Who developed the continental drift theory?