Plate tectonics - Wikipedia
网页Plate tectonics (from Latin tectonicus, from Ancient Greek τεκτονικός (tektonikós) 'pertaining to building') [1] is the scientific theory that Earth's lithosphere comprises a number of large tectonic plates, which have been slowly moving since 3–4 billion years ago.
Plate tectonics | Definition, Theory, Facts, & Evidence
网页2024年9月10日 · plate tectonics, theory dealing with the dynamics of Earth’s outer shell—the lithosphere—that revolutionized Earth sciences by providing a uniform context for understanding mountain-building processes, volcanoes, and earthquakes as well as the evolution of Earth’s surface and reconstructing its past continents and oceans.
Plate Tectonics - National Geographic Society
网页2024年3月7日 · Plate tectonics is a scientific theory that explains how major landforms are created as a result of Earth’s subterranean movements. The theory, which solidified in the 1960s, transformed the earth sciences by explaining many phenomena, including mountain building events, volcanoes, and earthquakes. In plate tectonics, Earth’s …
Plate Tectonics: Definition, Theory, Types, Facts, & Evidence
网页2023年2月17日 · What are Tectonic Plates. Tectonic plates are large, irregular-shaped slabs of rock making up the Earth’s crust and upper mantle. They are found to float on top of a semi-liquid layer of rock called the asthenosphere.
Plate Tectonics - Understanding Global Change
网页The theory of plate tectonics explains processes in the geosphere that are fueled by Earth’s internal heat that have operated over billions of years. These changes can be imperceptible over a human lifetime or violent and abrupt, …
Plate Tectonics Theory, Diagrams, Boundaries - Geology.com
网页Plate tectonics is a theory about how Earth's lithosphere is divided into a series of rigid plates; and, how movements of these plates produce earthquakes, volcanoes, ocean trenches, mountain ranges, and more.
Theory of plate tectonics | Britannica
网页plate tectonics, Theory that the Earth’s lithosphere (the crust and upper portion of the mantle) is divided into about 12 large plates and several small ones that float on and travel independently over the asthenosphere.
Plate Tectonics—The Unifying Theory of Geology
网页2020年2月11日 · Plate tectonics has revolutionized the way we view large features on the surface of the Earth. Earth’s internal processes were previously thought to operate in a vertical fashion, with continents, oceans, and mountain ranges bobbing up and down, without much sideways movement.
Explainer: Understanding plate tectonics - Science News Explores
网页2015年3月26日 · Tectonic plates are huge moving slabs that together make up Earth’s outer layer. Some span thousands of kilometers (miles) on a side. In all, a dozen major plates cover Earth’s surface. You might think of them as the cracked eggshell jacketing a hard-boiled egg.
Earth sciences - Plate Tectonics, Geology, Geophysics
网页2024年7月29日 · Plate tectonics describes seismic activity, volcanism, mountain building, and various other Earth processes in terms of the structure and mechanical behaviour of a small number of enormous rigid plates thought to constitute the outer part of the planet (i.e., the lithosphere).
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