地底下究竟是怎样的?古时候,人类就在探索这个神秘的问题。有的人认为地底下是地狱,这是迷信;有的人认为地球内部是空的,在南极和北极有两扇大门,可以从那里走向地球的深处。通过探险、调查,证明不是事实。那么地底下究竟是什么呢? 本世纪初,由于科学技术的迅速发展,人类大大加快了探索地下世界的步伐。科学家通过对携带着地球内部信息的地震波进行多次反复全面的研究,认为整个地球好比是一只鸡蛋,组成地球的地壳、地慢和地核,在地球里的分布就跟蛋 Under the ground exactly what? In ancient times, humans are exploring this mysterious problem. Some people think hell under the ground, which is superstitious; some people think that the Earth is empty, there are two gates in Antarctica and the Arctic, from there to the depths of the Earth. Through exploration, investigation, proof is not true. So what exactly is under the ground? At the beginning of this century, due to the rapid development of science and technology, mankind greatly accelerated the pace of exploring the underground world. Repeatedly and comprehensively studying the seismic waves carrying information inside the Earth, scientists think that the entire earth is like an egg, the earth’s crust, the earth’s slow and the earth’s core are distributed in the earth just like an egg