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.
Earth's Shifting Tectonic Plates - National Geographic Society
网页2023年10月19日 · Tectonic plates, the massive slabs of Earth’s lithosphere that help define our continents and ocean, are constantly on the move. Plate tectonics is driven by a variety of forces: dynamic movement in the mantle, dense oceanic crust interacting with the ductile asthenosphere, even the rotation of the planet.
Plate Tectonics Information and Facts | National Geographic
网页The movement of the plates creates three types of tectonic boundaries: convergent, where plates move into one another; divergent, where plates move apart; and transform, where plates move...
Introduction to plate tectonics (article) | Khan Academy
网页Course: Middle school Earth and space science > Unit 4. Lesson 3: Plate tectonics. Introduction to plate tectonics. Plate tectonics and the ocean floor. Introduction to plate tectonics.
Tectonic Plates - Science Notes and Projects
网页2024年2月10日 · The tectonic plates connect the parts of Earth’s lithosphere, much like the pieces of a jigsaw puzzle. Unlike puzzle pieces, tectonic plates do not rest on a stable surface. Instead, they float on the moving, semi-liquid …
Plate Tectonics - Understanding Global Change
网页Plate tectonics shapes global landforms and environments through the rock cycle, mountain building, volcanism, and the distribution of continents and oceans. These phenomena, ultimately driven by Earth’s internal heat, have far-reaching effects on other parts of the Earth system, including the sea level experienced along coastlines.
Plate Boundaries - National Geographic Society
网页2024年3月7日 · When Earth’s tectonic plates grind past one another, enormous amounts of energy can be released in the form of earthquakes. Volcanoes are also often found near plate boundaries because molten rock from deep within Earth—called magma—can travel upward at these intersections between plates .
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.
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