Layers of the Earth

Front

What is the asthenosphere?

Back

A semi-fluid layer of solid-liquid rock located beneath the lithosphere.

Front

What causes the Earth's magnetic field?

Back

Convection currents in the mantle.

Front

What is the oceanic crust?

Back

The thinner yet more dense layer of the Earth's crust, primarily composed of basalt.

Front

What is the inner core?

Back

A solid mass of iron and nickel at the center of the Earth.

Front

What is the outer core?

Back

A liquid layer of iron and nickel surrounding the inner core.

Front

What is the lithosphere?

Back

The rigid outer layer of the Earth, consisting of the crust and upper mantle.

Front

What is the mantle?

Back

The thick layer of rock between the crust and the outer core, composed of silicate minerals.

Front

What is the difference between oceanic and continental crust?

Back

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

Front

What are convection currents?

Back

The movement of fluid caused by differences in temperature and density, driving plate tectonics.

Front

What is the Earth's crust?

Back

The outermost layer of the Earth, consisting of solid rock.