A. The rotation of the Earth. B. The gravitational pull of the Moon. C. Convection currents in the mantle. D. The impact of asteroids. 相关知识点: 试题来源: 解析 C。解析:地幔中的对流运动是地幔运动并导致地球表面变化的主要原因。A选项,地球的自转不是地幔运动的主要原因;B选项,月球的引力主要...
B. It is a layer with very low temperature. C. It is a semi - molten and ductile layer. D. It is mainly made of gas. 相关知识点: 试题来源: 解析 C。解析:软流圈(asthenosphere)是上地幔(upper mantle)的一部分,它不是完全固态和刚性的(A错误),它是一种半熔融、具有韧性的层,这里的物质...
百度试题 结果1 题目What is the outermost layer of the Earth called? A. Mantle B. Core C. Crust D. Plate 相关知识点: 试题来源: 解析 C。解析:文章中明确提到“The crust is the outermost layer”,地球的最外层是地壳。反馈 收藏
What is the outermost layer of the Earth called? A. Core B. Mantle C. Crust D. Atmosphere 相关知识点: 试题来源: 解析 C。地球的最外层是地壳(Crust)。核心(Core)是地球的最中心部分;地幔(Mantle)在核心和地壳之间;大气层(Atmosphere)是地球周围的气体层,不属于地球的结构层。
Inside the shel of the egg,there is a white part and a yellow part. The white part covers the yellow part Ifthe mantle is ike the white part, the core of the Earth is like the yellow part. Howabout other planets? They also have cores.I. Read and choose.阅读短文,选择正确的答案。(...
Where does the heat that drives mantle convection come from? Who discovered convection currents? What is the pressure of the Earth's mantle? How do scientists know there is convection in the mantle? What is tectonic plate movement? Why does convection occur in the asthenosphere?
What is the most abundant element in the Earth's crust? What are the characteristics of the Earth's crust, mantle, and core? What is the state of matter of the Earth's mantle? What elements comprise the largest portion of the Earth's biosphere?
Weis, Dominique
且系划业是各治四易且系划业是各治四易The mantle is an important part of the Earth's interior. What is a
Planet Earth is made up of four overlapping subsystems that contain all of world’s land masses, water sources, living organisms, and gases. These four subsystems are known as spheres. Geographers break down the Earth’s systems into four spheres that make up the world’s air (atmosphere),...