Discusses the components of the earth's core. Discrepancy between the seismically determined density within the Earth's core and the experimentally determined density of iron; Solubility of ferrous oxide in molten iron at high pressures; Convection responsible for the Earth's magnetic field.Bassett...
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 trees.纸由树木制成。基础练习I. Read and choose.读一读,选择正确的词补全句子。core covered planet1. Let's go to theof the problem.2.Theis far from the...
百度试题 结果1 题目What is the outer core of the Earth? A. Solid B. Liquid C. Gas D. Rock 相关知识点: 试题来源: 解析 B。地球的外核是液态的。反馈 收藏
Inside the Race to Save the Maple Syrup Industry Fungal ‘Brains’ Can Think Like Human Minds Diamond Dust Could Help Cool the Planet Easter Island Is at the Core of Another Mystery Did Rain Help Form the First Cells on Earth? Advertisement - Continue Reading Below...
clashing and causing earthquakes. But there’s a downside, too: the Earth’s hot interior recycles the carbon that is essential to life, and also keeps the Earth’s outer core liquid, which is essential for maintaining our planet’s magnetic field. Without that, we’ll be vulnerable to inc...
Earth’s Inner CoreScientists have long struggled to understand what lies at the planet’s center, Directobservation of its center is impossible,so researchers must___(51)to other evidence. In 1889,a German scientist detected a severe earthquake in Japan.Geophysicists concluded that shock waves__...
difficult to study, the Earth's core has eluded scientists for centuries. Existing knowledge is largely based on comparing the aftershocks of earthquakes with echoes on the other side of the planet. Studying changes in the waves offers a glimpse of the nature and density of the Earth's ...
Although we crust-dwellers walk on nice cool ground, underneath our feet the Earth is a pretty hot place. Enough heat emanates from the planet's interior to make 200 cups of piping hot coffee per hour for each of Earth's 6.2 billion inhabitants, says Chr
The solid metal core of Earth does not rotate perfectly in time with the outer layers of the planet, and new research confirms that it has now reversed direction.
1) Is there any evidence that the Earth's magnetic field originates in the core rather than elsewhere? 2) Is there a compelling physical model?