Circulating Heat main content.

Circulating Heat

View of the Circulating Heat section of the Hall of Planet Earth with the mantle convection model at the center AMNH/D. Finnin

Exhibition Text

Deep beneath our feet is a 2,900-kilometer-thick (1,800-mile) layer of mostly solid rock called the mantle. The mantle flows slowly due to convection. In convection, hotter rocks, which have relatively low densities, rise, while cooler rocks with higher densities sink. In this globe, the hottest portions of the mantle (yellow) are rising toward the surface and cooler portions (red) are sinking toward the core.

The Earth's Core

The Earth's Core

 

The Earth's Mantle

The Earth's Mantle