A. It is made up of only one type of rock B. It is the thickest layer of the Earth C. It has different thicknesses in different places D. It is completely liquid 相关知识点: 试题来源: 解析 C。解析:地壳在不同的地方有不同的厚度,例如大陆地壳较厚,海洋地壳较薄。地壳是由多种岩石组成...
The earth is very much like the apple. It has four layers. The outer layer is the crust. It is solid rock. The rock is from 5 to 20 miles thick, and it's thicker underneath the continents. The next layer is called the mantle. It is the thickest layer, about 1,800 miles thick ...
The mantle is the thickest layer of Earth, making up about 84% of the planet’s volume. It extends from the bottom of the crust to a depth of about 2,900 km. It is composed of silicate rocks rich in iron and magnesium. The mantle is semi-fluid and contains convection currents that ...
Learn about the layers of the Earth and see which is the thinnest layer of Earth. Explore the Earth's crust, mantle, and the Earth's core and see...
Earth's Layers: The Earth is made up of four major layers: the crust, the mantle, the outer core, and the inner core. The crust is the thinnest portion, while the mantle is the thickest. Answer and Explanation:1 The hottest layer of the Earth is its innermost layer, the inner core....
C题目:地球内部还有第五层You may have learned from your textbook that the Earth is made up of four layers: First there is the crust, which is where we live and has water, soil and different kinds of rocks.Next comes the mantle, the thickest layer, which makes up about 67% of the ...
Is the mantle the largest layer of the Earth? What layer of the Earth is part crust and part mantle? Which layer of Earth is the thickest? Which atmospheric layer is closest to the Earth's crust? How thick is Earth's crust? What does the crust do for the Earth? Is the oceanic crus...
•ThickestlayeroftheEarth(makingup70%of theEarth’smass) •Thehotmaterial(magma)inthemantlerises tothetopofthemantle,cools,thensinks, reheats,andrisesagain.Theseconvection currentscausechangesintheEarth’ssurface UpperMantle Convection Currents Middle Mantle LowerMantle Mantle Core Inner Core Outer Co...
The thin crust, or outer layer of the earth is made mostly of rock. The thickness of this layer varies from 3 to 34 miles. Below the crust is the mantle. The mantle is about 1,800 miles thick and made mostly of solid rock. It is the thickest layer of the Earth. The mantle is ...
What is the thickest layer of the Earth? mantle What destructive process is formed by sliding plate boundaries? Earthquakes What is a crack in the Earthś surface fault What is broken up into sections called plates lithosphere What layer of Earth do convection currents occur in ...