Continental Drift and Earth's Layers

Front

What is the solid, metallic sphere at the center of the Earth?

Back

Inner Core

Front

In which layer of the Earth are the tectonic plates located?

Back

Lithosphere

Front

What is the hot, soft zone within the mantle where convection currents occur?

Back

Asthenosphere

Front

Why do hot fluids rise in a fluid medium?

Back

They are less dense than surrounding fluid.

Front

Which layer of the Earth is in a liquid state?

Back

Outer Core

Front

What is the outermost layer of the Earth called?

Back

Crust

Front

What is the layer of the Earth between the crust and the outer core?

Back

Mantle

Front

What is the process called when continents drift apart?

Back

Continental Drift

Front

What is the theory that explains the movement of Earth's plates?

Back

Plate Tectonics

Front

What is the layer of the Earth that is semi-solid and allows for the movement of tectonic plates?

Back

Asthenosphere