Earth's Layers

Front

What are the four main layers of the Earth?

Back

The four main layers of the Earth are 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 inner core?

Back

The inner core is the solid innermost layer of the Earth, composed mainly of 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 semi-solid rock that can flow slowly.

Front

What is the crust?

Back

The crust is the outermost layer of the Earth, consisting of solid rock and soil.

Front

What is the asthenosphere?

Back

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

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

How does temperature change with depth in the Earth?

Back

Temperature generally increases with depth in the Earth due to the heat from the core.

Front

What is the difference between the inner core and outer core?

Back

The inner core is solid, while the outer core is liquid.

Front

What is the role of the mantle in plate tectonics?

Back

The mantle's convection currents drive the movement of tectonic plates.