The Earth's core is mainly made up of ___. A. silicon and oxygen B. iron and nickel C. magnesium and iron 相关知识点: 试题来源: 解析 B。解析:地球的地核主要由铁和镍组成。硅和氧是地壳中含量较多的元素,镁和铁不是地核主要的组成成分。反馈...
The Earth is made up of three layers. In the centre is the core, which is as big as the Mars and has a high 1 of over 7,000˚C. 2 the core is a thick layer called the mantle, 3 lower part is solid rock, 4 portion is molten rock called the magma. Floating on top of th...
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...
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 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。
The inner core of the Earth is mainly made of ___. A. iron and nickel B. rock and soil C. water and gas D. ice and snow 相关知识点: 试题来源: 解析 A。本题考查地球内部结构的知识。地球的内核主要由铁和镍组成,选项 B 岩石和土壤主要存在于地壳,选项 C 水和气体通常不在地球内核,选项...
The Earth is made up of several layers. Which layer do we live on? A. The inner core B. The outer core C. The mantle D. The crust 相关知识点: 试题来源: 解析 D。解析:地球由多个圈层组成,地球的最外层是地壳,我们人类生活在地壳之上。内核对人类来说太深不可达,外核和地幔也都在地球内部...
1、The Structure of the Earth and Plate TectonicsStructure of the Earth The Earth is made up of 3 main layers: Core Mantle CrustInner coreOuter coreMantleCrustThe Crust This is where we live! The Earths crust is made of:Continental Crust- thick (10-70km)- buoyant (less dense than ...
Inside the outer core C. On the crust Correct Answer C. On the crust Explanation The lithosphere is located on the crust of the Earth. The lithosphere is the outermost layer of the Earth and is made up of the crust and the uppermost part of the mantle. It is a rigid and solid layer...
According to the study, the "snow" in the Earth's core is made of tiny particles of iron -- much heavier than any snowflake on the planet's surface -- that fall from the molten outer core and pile on top of the inner core, creating layers up to 320 km thick that cover the inner...