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Our planet’s magnetic field is believed to be generated deep down in the Earth’s core.
Nobody has ever taken the mythical journey to the centre of the Earth, but by studying the way shockwaves from earthquakes travel through the planet, physicists have been able to work out its likely structure.
Right at the heart of the Earth is a solid inner core, two thirds of the size of the Moon and composed primarily of iron. At a hellish 5,700°C, this iron is as hot as the Sun’s surface, but the crushing pressure caused by gravity prevents it from becoming liquid.
Surrounding this is the outer core, a 2,000 km thick layer of iron, nickel, and small quantities of other metals. Lower pressure than the inner core means the metal here is fluid.
Differences in temperature, pressure and composition within the outer core cause convection currents in the molten metal as cool, dense matter sinks whilst warm, less dense matter rises. The Coriolis force, resulting from the Earth’s spin, also causes swirling whirlpools.
This flow of liquid iron generates electric currents, which in turn produce magnetic fields. Charged metals passing through these fields go on to create electric currents of their own, and so the cycle continues. This self-sustaining loop is known as the geodynamo.
The spiralling caused by the Coriolis force means that separate magnetic fields created are roughly aligned in the same direction, their combined effect adding up to produce one vast magnetic field engulfing the planet.
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What is the relationship between electron and magnetism?
Electrons have a charge. Any moving charge creates an electric field, e.g. electricity moving through a wire causes a magnetic field around the wire, or the earth rotating creates a magnetic field which causes a compass to point north. Similarly all electrons have a spin factor. similar to the earth rotating, the spin of electrons create a magnetic field around the electron.
Is Earth is an electromagnet?
Earths electromagnetic field is essiential to life on earth. Its deflects all the harmful radiation given off by the sun and in deep space. It is widely accepted that it is generated by our earths core. The core at the centre of the earth spins at a tremendous rate and the energy that it creates by doing this is thought to give of the electromagnetic energy.
What is the magnetic force of this planet called?
The magnetic force on Earth is called Earth's magnetic field or also the geomagnetic field.
Does the earths magnetic field cause the earth to tilt?
No. Earth's magnetic field does not affect its axis of rotation.
Passing a magnetic field by a wire creates a what?
Passing a wire near a magnetic field induces an electric current in the wire.
What creates the Earths magnetic field?
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.
What creates Earth's magnetic field and where does it take place?
The rotation of the molten, iron core of the Earth.
Why does the earth have its own magnetic field?
The Earth's magnetic field is probably caused by convective currents in Earth's interior.
What does the core create on the other side of the earth?
the core creates a magnetic field
The dynamo theory states that Earth's magnetic field is created in what layer?
In the Dynamo Theory, the magnetic field of the earth is created in the outer core. The fluid contained in the outer core creates and maintains the magnetic field during rotation.
What does an outer core do to the earth?
nothing of course its just the crust of the earth( WRONG is creates the magnetic field)
What creates Earth's magnetic Earth?
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.
Why won't the earth get any hotter from the suns rays?
The earth has a solid iron core, which creates an electric magnetic field around us. Only a few of the sun's rays can get through that magnetic field.
How winding creates a magnetic field?
Current flow in any conductor creates a magnetic field, winding just concentrates it.
What does the movement of the outer core create?
The movement of the liquid in the outer core creates Earth's magnetic field.
What do geologists think creates earths magnetic field?
Electric currents in Earth's molten outer core.
The dynamo theory states that earths magnetic field is created in layers?
In the Dynamo Theory, the magnetic field of the earth is created in the outer core. The fluid contained in the outer core creates and maintains the magnetic field during rotation.
