WebThe lithosphere can’t be classified neatly as either crust or mantle because it consists of both. It is formed from the crust as well as the uppermost layer of the mantle which is stuck to the underside of the crust. Tectonic plates are fragments of … Web31 mrt. 2024 · Here, is the thickness of the oceanic mantle lithosphere, is the thermal diffusivity (approximately 1.0 × 10 −6 m 2 /s or 6.5 × 10 −4 sq ft/min) for silicate rocks, and is the age of the given part of the lithosphere. The age is often equal to L/V, where L is the distance from the spreading centre of mid-oceanic ridge, and V is velocity of the …

Core–mantle boundary - Wikipedia

Webanswer choices. The coolest layers are farthest from the core. The lease dense layers are closest to the core. The layers with the highest concentration of metals are closest to the crust. The layers that remain in a molten state are closest to the crust. Question 10. WebThe idea that Earth's lithosphere is broken up into separate plates that float onthe mantle is the theory ofA. continental driftB. seafloorC. tectonic movement spreadingD. plate tectonics 7. lithosphere at _____boundary will uplift and tear apart due to rising hot magma. 8. how to subscribe to fubotv

14.1: Spaceship Earth- Structure and Composition

Web21 sep. 2024 · The lithosphere is the earth’s rigid outer layer, with a thickness ranging from 10 to 200 kilometers. It consists of the crust as well as the upper part of the mantle. The lithosphere is divided into tectonic plates (lithospheric plates), which move and create large-scale changes in the earth’s geological structure (folding, faulting). WebCore, mantle, and crust are divisions based on composition. The crust makes up less than 1 percent of Earth by mass, consisting of oceanic crust and continental crust is often more felsic rock. The mantle is hot and represents about 68 percent of Earth's mass. Finally, the core is mostly iron metal. The core makes up about 31% of the Earth. WebThe mantle is made up of Si and O, like the crust, but it contains more Fe and Mg. Thus, Olivine (Fe2SiO4-Mg2SiO4) and pyroxene (MgSiO3-FeSiO3) are abundant in the mantle. The mantle extends to the core-mantle interface at approximately 2900 km depth. Thus, the mantle contains the lower portion of the lithosphere, the asthenosphere, and the ... reading maps google