Earth's Interior

Earth’s Interior

Earth’s interior consists of distinct layers, each with unique properties. Scientists classify these layers into four main sections: the crust, mantle, outer core, and inner core.

• The crust is the thin outer layer where we live.
• Beneath it, the mantle consists...

The Kola Superdeep Borehole, the deepest hole ever drilled on Earth, is only over 7.6 miles, a mere fraction of Earth’s total depth.

Since digging very deep is impossible, how do scientists learn about Earth’s interior? Let’s see.

One key method involves studying seismic waves produced during an earthquake. These waves are of two ty...