The Earth's core is mainly composed of _. A. Iron and nickel B. Silicon and oxygen C. Aluminum and magnesium D. Calcium and potassium 相关知识点: 试题来源: 解析 A。解析:地球的核心主要由铁和镍组成。选项A正确。选项B中的硅和氧是地壳中较为常见的元素组成。选项C中的铝和镁不是地核的主...
The Earth's core is mainly composed of ___. A. Iron and nickel B. Silicon and oxygen C. Magnesium and aluminum D. Carbon and hydrogen 相关知识点: 试题来源: 解析 A。解析:地球的核心主要由铁和镍组成。选项A符合地球科学中关于地球核心组成成分的事实。选项B硅和氧是地壳中较为常见的元素组合。
There is further evidence that Earth may have a metallic core.Anyone who understands the functioning of a compass is aware that Earth has a magnetic field.The planet itself behaves as if there was a great bar magnet embedded within it.A magnetic field is developed by the flow of electric ch...
Learn facts about Earth's core. Discover what the center of the earth is made of and examine the importance of Earth's core's temperature and magnetic field. Updated: 11/21/2023 Table of Contents What is the Core of the Earth? What is the Center of the Earth Made Of? Earth's ...
There is further evidence that Earth may have a metallic core. Anyone who understands the functioning of a compass is aware that Earth has a magnetic field. The planet itself behaves as if there was a great bar magnet embedded within it. A magnetic field is developed by the flow of electri...
结果1 题目The outer core of the Earth is ___. A. solid B. made up of air C. liquid D. made up of rocks 相关知识点: 试题来源: 解析 C。解析:“The outer core is liquid and mainly composed of iron and nickel.”。 反馈 收藏 ...
The core of the Earth is divided into two parts: the outer core and the inner core. What is the state of the outer core? A. Solid. B. Liquid. C. Gas. D. Plasma. 相关知识点: 试题来源: 解析 B。解析:地球的外核是液态的,这是因为外核的温度和压力条件使得物质呈现液态。A选项,固体...
[#insert4]Wegener maintained that Earth is composed of concentric shells of increasing density from crust to core. The outermost shell is not continuous but made of continental blocks of lighter rock called sial (an acronym for silica- and aluminum-rich rock) floating in the denser sima (...
The Earth is composed of many layers, and ifthe iron in its core is moved the Earth’s magnetic field is changed, sometimes more significantly beforescientists can predict.
The Internal Structure of the Earth:The Earth is made up of three main layers namely the crust, mantle, and core. The crust is the outer solid layer. The two inner layers are the mantle and core, respectively.Answer and Explanation: ...