Earth is a liquid layer about 2,layers of the earth song pdf kilometers thick. C near the inner core.
50 times stronger than the magnetic field at the surface. Without the outer core, life on Earth would be very different. This might have removed the Earth’s atmosphere, making the planet nearly lifeless. In 2015, Prof Xiaodong Song from the University of Illinois and other researchers in China suggested the inner core has two layers.
The seismic wave data suggests that crystals in the “inner inner core” are in an east-to-west direction. Those in the “outer inner core” are lined up north to south. Another scientist commented: “If this is true, it would imply that something very substantial happened to flip the orientation of the core to turn the alignment of crystals in the inner core north-south as is seen today in its outer parts”. Tidal dissipation and the strength of the Earth’s internal magnetic field.