Tectonic plates are massive slabs of Earth's lithosphere that float atop the semi-fluid mantle, constantly shifting and ...

Tectonic plates under the Americas, Europe, and Africa are separating as the Atlantic Ocean grows wider. A 2021 study suggests atypically hot material, 410 miles underground, is rising and forcing ...

Scientists used to think Earth's tectonic plates were moved by the negative buoyancy created as they cooled down. ... it's known as a divergent boundary, where lava spews out, and volcanoes can form.

Plate Tectonics. The Earth's plates jostle about in fits and starts that are punctuated with earthquakes and volcanic eruptions. ... At divergent boundaries in the oceans, ...

Plate tectonics (from the Late Latin tectonicus, from the "pertaining to building") is a scientific theory that describes the large-scale motion of Earth's lithosphere. This theoretical model ...

Plate tectonics is the theory that Earth's outer layer is made up of plates, which have moved throughout Earth's history. The theory explains the how and why behind mountains, volcanoes, and ...

A mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the ...

Ocean Ridges. Location and Characteristics. Aden Ridge. 1. Located in Gulf of Aden. 2. It is divergent boundary between the Somalian and the Arabian tectonic plates.