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boyakko [2]
3 years ago
6

Tectonic plates are pieces of the lithosphere that move around on top of the asthenosphere. Which of the following is a driving

force
behind the movement of tectonic plates?
OA. the circular flow of molten iron in the outer core
OB. gravitational pulls from the Moon and the Sun
OC. centrifugal forces on Earth's surface due to Earth's rotation on its axis
OD
convection currents in the mantle
Biology
1 answer:
Vsevolod [243]3 years ago
7 0

Answer:

La Tectónica de Placas es una teoría unificadora que explica una variedad de características y acontecimientos geológicos. Se basa en un sencillo modelo de la Tierra que expone que la rígida litosfera se encuentra fragmentada, formando un mosaico de numerosas piezas de diversos tamaños en movimiento llamadas placas, que encajan entre si y varían en grosor según su composición ya sea corteza oceánica, continental o mixta.

Explanation:

La litosfera descansa sobre la astenósfera que es semiplástica, más caliente y débil, por lo que se cree que algún tipo de sistema de transferencia de calor dentro de la Tierra, procedente del núcleo y del manto, hace que las placas litosféricas se muevan. Entre 1923 y 1926, el científico irlandés John Joly propuso que, a causa de la mala conductividad térmica de la corteza, el calor radiactivo que se genera en la Tierra se acumula debajo de la corteza y funde el manto, lo que provoca una convección térmica (transferencia convectiva de calor). Esta hipótesis fue la base de la teoría de la convección en el manto, cuyo principal exponente Griggs (1939), la aplicó a la deriva continental. Posteriormente, A. Holmes (1944) postuló que la convección también podía llevarse a cabo en el manto sólido.

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