| Finally, fluid currents in the Earth's inner core can change the rotation of the planet. |
| McCarthy's angular face, a weather-beaten mask of crags and furrows, hides an inner core filled with Yorkshire steel and Irish charm. |
| Most modern calculations rely on the fact that we believe the inner core to be made up of iron and nickel that is just about at melting point. |
| When it explodes, the outer part is aspherical, but as we see lower down, the dense inner core is spherical. |
| The farmer passed handfuls of flax through a tool called a flax brake to break up the hard inner core. |
| The scientists compared the time it took seismic waves generated by nearly identical earthquakes to travel through the Earth's inner core. |
