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Plate Tectonics Vocabulary

Teacher: Mrs. Moses
Across
A weak spot in the crust where magma comes to the surface
Two plates move horizontally past each other in opposite directions
Two plates move away from each other
A break or crack in Earth's lithosphere
Movement of magma in the mantle that causes uneven heating
The theory that pieces of Earth's lithosphere are in constant motion
Down
Two plates move toward each other
Molten magma adds new oceanic crust to the ocean floor at divergent boundaries
Oceanic crust sinks underneath a deep-ocean and back into the mantle
The hypothesis that the continents slowly move across Earth's surface
Earth shaking that results from plate movement