Earth's outer core - Wikipedia
Earth's outer core is a fluid layer about 2,260 km (1,400 mi) thick, composed of mostly iron and nickel that lies above Earth's solid inner core and below its mantle. [1][2][3] The outer core begins approximately 2,889 km (1,795 mi) beneath Earth's surface at the core-mantle boundary and ends 5,150 km (3,200 mi) beneath Earth's surface at the in...
Layers of the Earth - Science Notes and Projects
2023年8月1日 · The Outer Core. The outer core extends from 2,900 km to about 5,150 km beneath the Earth’s surface. It mainly consists of liquid iron and nickel. The motion within this layer generates the Earth’s magnetic field. The Inner Core. The …
Core
2024年6月11日 · Earth is divided into three main layers. The dense, hot inner core (yellow), the molten outer core (orange), the mantle (red), and the thin crust (brown), which supports all life in the known universe. Earth’s core is the very hot, very dense center of our planet.
The Outer Core: The Earth’s Swirling Cauldron - ZME Science
2023年10月11日 · Earth’s outer core is a layer of mostly molten metal that lies between the solid inner core and the mantle. This outer core primarily comprises liquid iron and nickel, with some other trace...
Earth's Outer Core - Universe Today
2009年3月9日 · Deep within the Earth, thousands of kilometers below your feet is the core of the Earth. Once thought to be a single ball of iron, scientists now know that the Earth’s core contains a solid inner...
Explainer: Earth — layer by layer - Science News Explores
2019年11月11日 · Starting at the center, Earth is composed of four distinct layers. They are, from deepest to shallowest, the inner core, the outer core, the mantle and the crust. Except for the crust, no one has ever explored these layers in person. In fact, the deepest humans have ever drilled is just over 12 kilometers (7.6 miles). And even that took 20 years!
Internal structure of Earth - Wikipedia
The structure consists of an outer silicate solid crust, a highly viscous asthenosphere, and solid mantle, a liquid outer core whose flow generates the Earth's magnetic field, and a solid inner core.