Earth's Layers

Front

What are the layers of the Earth?

Back

The Earth has four main layers: the inner core, outer core, mantle, and crust.

Front

What is the outer core made of?

Back

The outer core is made of liquid metal, primarily iron and nickel.

Front

What is the mantle?

Back

The mantle is the layer of the Earth between the crust and the outer core, composed of solid rock that flows slowly.

Front

What is the crust?

Back

The crust is the outermost layer of the Earth, consisting of the continental and oceanic crust.

Front

What is the inner core?

Back

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

Front

What is the asthenosphere?

Back

The asthenosphere is a soft, semi-fluid layer of the mantle where rocks can flow like a thick liquid.

Front

What is the lithosphere?

Back

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

Front

What is the difference between continental and oceanic crust?

Back

Continental crust is thicker and less dense than oceanic crust, which is thinner and denser.

Front

What is the temperature of the inner core?

Back

The temperature of the inner core can reach up to 5,700 degrees Celsius (10,300 degrees Fahrenheit).

Front

How does heat transfer occur in the mantle?

Back

Heat transfer in the mantle occurs through convection, where hot material rises and cooler material sinks.