Physical Layers of Earth

Front

What are the physical layers of the Earth?

Back

The Earth is divided into four main physical layers: the lithosphere, asthenosphere, mesosphere, outer core, and inner core.

Front

What is the lithosphere?

Back

The lithosphere is the rigid outer layer of the Earth, consisting of the crust and the uppermost part of the mantle.

Front

What is the asthenosphere?

Back

The asthenosphere is a semi-fluid layer beneath the lithosphere that allows tectonic plates to move.

Front

What is the mesosphere?

Back

The mesosphere is the layer of the Earth located below the asthenosphere, characterized by increasing density and temperature.

Front

What is the outer core?

Back

The outer core is a liquid layer composed mainly of iron and nickel, located beneath the mantle.

Front

What is the inner core?

Back

The inner core is the solid innermost layer of the Earth, composed primarily of iron and nickel, and is extremely hot.

Front

Which layer is the most dense?

Back

The inner core is the most dense layer of the Earth.

Front

Which layer is hard or rigid?

Back

The lithosphere is the hard or rigid layer of the Earth.

Front

What layer is the hottest?

Back

The mesosphere is the hottest layer of the Earth.

Front

Which layer can flow like a liquid?

Back

The asthenosphere is a solid that can flow like a liquid.