The first step toward learning about plate tectonics is to learn about the Earth's interior structure. This lesson should address both of these topics. This activity is designed for one 1-hour ...

The Earth's interior is composed of four layers, three solid and one liquid—not magma but molten metal, nearly as hot as the surface of the sun. The deepest layer is a solid iron ball ...

Deep within Earth’s mantle lie two enormous, continent-sized structures known as LLVPs. Scientists once believed these ...

Our planet's interior is much too deep and hot to ... But how good is your knowledge of Earth's inner structure? Find out by taking this quiz. If you need a hint, hit the yellow button.

Scientists mapped the structure, finding that it was unusually thicker and cooler than the surrounding areas. The ancient seafloor challenges existing theories about Earth's interior structure and ...

In addition, students discuss how scientists use earthquake waves to investigate the interior structure of the Earth. This activity is designed for one 1-hour class period. 1. Ask a student to ...