need tihis info in less than five minutes
2007-12-07 03:39:11 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
There are 2 cores. The outer is liquid iron-nickel. The inner is solid iron-nickel. The inner core is not molten because the high pressure in the core raises the melting point of iron way above the temp of what the core actually is.
Inge Lehmann was the first to propose the inner core was solid based on P-waves.
Sir Harold Jeffreys discovered the outer core was liquid based on both P and S-waves (which do not travel through liquid).
2007-12-07 04:40:03 · answer #1 · answered by Lady Geologist 7 · 0⤊ 0⤋
The inner core has a diameter of 1370 Km.It is a solid matter.The temperature is 4000 degree celcius.It is made of nickel and iron
2007-12-07 06:12:08 · answer #2 · answered by Arasan 7 · 0⤊ 0⤋
The inner core is not spherical and rotates at a rate 1% faster than the crust
2007-12-09 02:36:48 · answer #3 · answered by Ridi 2 · 0⤊ 0⤋
The inner core is solid iron and nickel (mostly). The outer core is liquid.
2007-12-07 03:52:20 · answer #4 · answered by JimZ 7 · 0⤊ 0⤋
the inner core of earth is liquid that is a molten mass
2007-12-07 03:44:52 · answer #5 · answered by nirman 2 · 0⤊ 0⤋