The earth's outer core produces the magnetic field.
core
The outer liquid core produces the strong magnetic field of the Earth, through the dynamo effect.
Scientists believe that it is the movements in the liquid outer core that create the magnetic field. Earth's magnetic field affects the whole planet.
it has an iron core
The Earth's magnetic field is the result of electric currents in the liquid metal outer core.The outer core of the Earth is over 2,000 km thick. It sits above the solid inner core and is composed of highly conducting liquid iron and nickel. Above the outer core is the Earth's mantle.The geodynamo is the mechanism thought to be responsible for the electric current in the core and the generation of the Earth's magnetic field through the convection of conducting fluids in the Earth's core. Other planets with a molten metal core can also have a magnetic field.See related links.
the core creates a magnetic field
Earth's center, or core, contains magnetic rock
the outer core.
The Outer Core
Earth's magnetic field.
Scientists think that the presence of the molten nickel iron layer of Earth's outer core and the spinning of the planet creates the magnetic field through the geodynamo mechanism.The geodynamo mechanism couples the convection of the liquid metal in the Earth's core with the magnetic field to create the current responsible for the magnetic field.Other planets with a molten metal core can also have a magnetic field.See related links.Earth's magnetic field is generated by the electric currents in the conductive material of its core.