| Primary waves are slowed and deflected but not stopped by the liquid outer core. |
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| It is probable that every naturally occurring element is present in the outer core at least at trace levels. |
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| Other light elements that are commonly proposed for the outer core are silicon, carbon, helium, and nitrogen. |
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| There is also a lot of evidence regarding how the outer core of the Earth convects and that helps to establish the temperature. |
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| That way has an outer core of Hourcade's outward-looking philosophy mingled with tear-jerking national pride. |
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| Being part of a more minimalist outer core, which receives less in subsidies, is unlikely to appeal to Warsaw. |
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| Internal temperature differences would not have been great enough to roil its liquid outer core and drive the magnetic dynamo. |
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| It is also crucial to the existence of the magnetic field, which arises from the motion of liquid iron in the outer core. |
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| Ultimately, the occurrence of reversals must be related to changes in the fluid flow in the outer core. |
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| As long as there is sufficient fluid motion in the outer core, the process will continue. |
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| The simplest explanation is that convection in the outer core ceases, allowing the magnetic field to decay. |
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| The outer core is in constant motion, due both to the Earth's rotation and to convection. |
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| Earth is made up of a solid inner core, a liquid outer core and a solid mantle. |
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| The temperature at the core mantle boundary is roughly 4800o C, hot enough for the outer core to exist in a liquid state. |
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| Scientists believe the magnetic field is generated deep inside the Earth where the heat of the planet's solid inner core churns a liquid outer core of iron and nickel. |
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| The scientists found that the seismograms were almost identical for waves that had travelled only in the mantle, or Earth's crust, and outer core. |
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| The outer core is thought to be liquid because shear waves do not pass through it. |
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| This invisible shield originates deep inside Earth, where convection currents in the molten outer core generate a strong magnetic dipole. |
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| The core is made of two layers: an outer core of melted rock and an inner core of solid rock. |
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| All you need to do is strip the outer core and twist the cap onto one of the inner cables. |
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| We believe that it is produced by electrical currents that originate in the hot, liquid, outer core of the Earth. |
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| The planet's electromagnetic field is decaying due to the outer core of the Earth, itself a ball of trillions of tons of liquid metal, having stopped moving. |
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| The core is divided into two parts, the outer core and the inner core. |
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| Secular variation, like the magnetic field itself, originates in the outer core of the Earth, and is an integral part of the process by which the field is generated. |
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| Distinct boundaries of state or substance distinguish the different layers — between the elastic rock of the mantle and the iron liquid of the outer core, and between the liquid outer core and the solid inner core. |
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| Beneath the mantle, an extremely low viscosity liquid outer core lies above a solid inner core. |
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| The average magnetic field in the Earth's outer core was calculated to be 25 gauss, 50 times stronger than the field at the surface. |
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| So the slow motion of the Magnetic Pole across the Arctic is due to the secular variation of the magnetic field, a process that originates in the outer core of the Earth, approximately 3000 km below the surface. |
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| Ratholing produces a small inner core of powder that will readily flow, leaving an immovable, larger outer core of powder resistant to discharge. |
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| Lehmann, who died aged 104 in 1993, studied earthquakes to find that the Earth had both an inner and outer core, a revelation which redefined how the planet was studied. |
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| The radius of the outer core is about half of the radius of the Earth. |
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| In general, hot material in the outer core seems to flow toward cold regions in the lower mantle, which convects much more slowly than the liquid core. |
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