(earth structure) Define Plate Tectonic Theory.

Geography

2 answers:

Svetlanka [38]3 years ago

6 0

Explanation:

Plate tectonics is the theory that Earth's outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core. The plates act like a hard and rigid shell compared to Earth's mantle. This strong outer layer is called the lithosphere, which is 100 km (60 miles) thick. The lithosphere includes the crust and outer part of the mantle. Below the lithosphere is the asthenosphere, which is malleable or partially malleable, allowing the lithosphere to move around. How it moves around is an evolving idea.

lianna [129]3 years ago

3 0

Answer:

okay

Explanation:

Play tectonics is a scientific theory describing the large scale motion of 7 large plates in the movements of a larger number of smaller plates of Earth's lithosphere since tectonic processes began on earth between 3.3 and 3.5 billion years ago

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