WebMay 10, 2024 · The uppermost part of the mantle near the crust is hard and brittle. This layer and the Earth's crust are known as the lithosphere, while the rest of the upper mantle below is called the... WebLower mantle c. Asthenosphere d. Moho Q04.Describe the source of the Show transcribed image text Expert Answer 100% (12 ratings) Ans 1:a) Continental crust. average density of continental crust (2.7-2.8g/cc) whereas of oceanic crust (2.9-3.0g/cc). Ans 2:b) False. Since the average density of continental crust is lower than of oceanic crust.
Asthenosphere geology Britannica
WebJul 1, 2005 · Earths composition changes abruptly about 2,900 kilometers below the surface, where the core gives way to a mantle much less dense than the core and made of solid magnesium-iron silicate... WebMay 2, 2024 · Earth's lower mantle lies just below the crust. In geology, a crust is the outermost layer of a planet. The crust of the Earth is composed of a great variety of igneous, metamorphic, and sedimentary rocks. The crust is underlain by the mantle. cyzner institute charlotte nc
Asthenosphere - Wikipedia
WebThe lower mantle is found between 670km and 2,890km below the surface, and is made from solid rock. The rock is hot enough to melt, but is solid because of the pressure pushing down on it. Upper Mantle Temperature: 1,400°C – 3,000°C State: liquid / solid Composition: iron, oxygen, silicon, magnesium and aluminium WebMar 11, 2011 · The layer of the Earth directly below the lithosphere is the asthenosphere, the ductile part of the uppermost mantle. What is asthenophere? The Asthenosphere is the upper layer of Earth's... WebAug 20, 2014 · The asthenosphere lies just below the lithosphere and composes the upper part of the Earth's mantle. Its temperature is 1300 degrees Celsius. What is the layer … bingham county assessor\u0027s office