The white part covers the yellow part.If the mantle is like the white part, the core of the Earth is like the yellowpart. How about other planets? They also have cores.The core of the Earth is made of uranium.地核由铀构成。be made of..由……制作而成e. g. Paper is made of ...
Earth, if cut in half, would be shown as layers, like a cake. It is made up of four main layers: the crust, the mantle, the outer core, and the inner core. Ingredients in Earth's layers include solid silicate-based rocks and liquid metals....
"This is the core of the "American Dream". 两个多世纪以来,它一直吸引着移民,激励着辛勤工作。 It has attracted immigrants and inspired hard work for more than two centuries now. 无论目前的情况看起来多么糟糕,对更美好未来的承诺仍然是大多数美国人的核心信念。 No matter how bad ...
Even though some days feel more chaotic than others, the rotation of the surface of the planet proceeds at a pretty constant rate—about one full rotation every 24 hours. But the rotational speed of the inner core is less stable, and has been known to shift over time. Now, researchers ...
Ethan Gilsdorf
根据最后一段 “A leading theory is that declining atmospheric CO2 levels were the cause of the longer, colder ice ages. The million-year ice core record will provide the essential CO2 record to test this theory.( 一个主要的理论是,大气中二氧化碳水平的下降是冰河时期更长、更冷的原因。百万年的...
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
A hydrogen atom is traveling high within the outermost layer of Earth's atmosphere. This particular atom first entered the exosphere millions of years ago, but today it overcomes Earth's gravitational pull and escapes, joining the roughly 90 tons of material that leak out of our at...
Earth is the planet of life. Running, crawling or flying, life abounds everywhere.地球是一个满是生命的星球。奔跑着的、爬行着的或飞翔着的，到处都是生命。But for all this beautiful diversity to have proliferated, Earth has had to provide a favourable environment for around four billion years. ...
The Belt and Road Initiative is a creative development that takes on and carries forward the spirit of the ancient silk routes – two of the great achievements in human history and civilization. It enriches the ancient spirit with the zeitgeist and culture of the new era, and provides a ...