WebStudy with Quizlet and memorize flashcards containing terms like The theory that the lithosphere is segmented into several plates that float and slide over the plastic asthenosphere, The supercontinent that existed when all Earth's continents were joined together, The northern part of Pangea and more. ... Definition. 1 / 18. plate tectonics. WebPlate tectonics refers to the movement of the rigid plates around the surface of Earth. The outer portion of the planet, or lithosphere, is relatively rigid because it is relatively cold. ... The churning of the mantle also affects the chemical composition of the ocean and has a long-term influence on climate. Mantle convection is the main way ...
Mantle Convection and Plate Tectonics (article) Khan Academy
WebAt the rear, plates A and B move apart, or diverge, resulting in extension and the formation of a divergent margin. At the front, plates A and B overlap, or converge, resulting in compression and the formation of a convergent … WebMar 26, 2015 · The process is known as plate tectonics. The term tectonics comes from a Greek word meaning “to build.” 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. costco commerce township
What are the different types of plate tectonic boundaries?
WebRevise GCSE Geography and learn about the Earth's structure, tectonic plates, constructive and destructive plate margins, collision zones and more. WebIn plate tectonics, a divergent boundary or divergent plate boundary (also known as a constructive boundary or an extensional boundary) is a linear feature that exists between two tectonic plates that are moving away from each other. Divergent boundaries within continents initially produce rifts, which eventually become rift valleys.Most active … Websubduction: [noun] the action or process in plate tectonics of the edge of one crustal plate descending below the edge of another. break down uric acid