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Chapter 7 Vocabulary

Across
Topmost layer of the Earth made up of crust and the solid portion of the upper mantle
Thin plates that are made of basalt
Thick plates made of andesite and granite
Occurs when two plates move towards each other and collide
Scientific theory explaining how the plates move on the Earth's surface
Juan de Fuco Plate, Nazca Plate
A sphere of hot, solid metal
When two plates move away from each other
When two plates slide past each other
Down
The supercontinent
Eurasian Plate, North America Plate
Thick layer that surrounds the core
Caused by the very hot material at the deepest part of the mantle rising, then cooling, sinking again, then heating
Where the plates of the Lithosphere float, or slide atop, a thin, semi-solid layer in the upper mantle
Large plates that move over the asthenosphere
A layer of solid rock that surrounds the Earth's surface
Layer that surrounds the inner core