出典:Wiktionary
出典:『Wiktionary』 (2025/12/04 20:01 UTC 版)
outer core (plural outer cores)
出典:Wikipedia
出典:『Wikipedia』 (2011/07/29 16:42 UTC 版)
The outer core of the Earth is a liquid layer about 2,266 kilometers thick composed of iron and nickel which lies above the Earth's solid inner core and below its mantle. Its outer boundary lies 2,890 km (1,800 mi) beneath the Earth's surface. The transition between the inner core and outer core is located approximately 5,150 km beneath the Earth's surface.