Layers of the Earth

Front

What are the physical layers of the Earth?

Back

The physical layers of the Earth are the inner core, outer core, mesosphere, asthenosphere, and lithosphere.

Front

Which crust is thicker: oceanic or continental?

Back

The continental crust is thicker than the oceanic crust.

Front

What is the thinnest layer of the Earth?

Back

The thinnest layer of the Earth is the crust.

Front

What does the lithosphere include?

Back

The lithosphere includes the crust and the uppermost portion of the mantle, which is solid and rigid.

Front

What are the chemical layers of the Earth?

Back

The chemical layers of the Earth are the core, mantle, and crust.

Front

What is the composition of the inner core?

Back

The inner core is primarily composed of solid iron and nickel.

Front

What is the outer core made of?

Back

The outer core is composed of liquid iron and nickel.

Front

What is the mantle primarily composed of?

Back

The mantle is primarily composed of silicate rocks that are rich in magnesium and iron.

Front

What is the asthenosphere?

Back

The asthenosphere is a semi-fluid layer of the mantle that allows for the movement of tectonic plates.

Front

What is the difference between oceanic and continental crust?

Back

Oceanic crust is thinner and denser than continental crust, which is thicker and less dense.