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Project # 3: Earth Vocabulary

Across
The first layer of the Earth
2 plates divide at this boundary
2 plates collide at this boundary
Alfred Wegener's theory
The third layer of the Earth
The second layer of the Earth
Down
When 2 plates collide and one goes under the other
Fossils that help scientist determine the age of rock layers
The rigid outer part of the Earth consisting of the Crust and upper Mantle
The fourth layer of the earth
2 plates slide past each other at this boundary
The super continent Alfred Wegener discovered