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The cause of the magnetic fields around the earth is the earth's rotation and the convection of electrically conductive molten rock deep inside the Earth. The Earth rotates about an iron core, this produces an induction current that generates a series of magnetic flux lines that comprise the magnetic field. Because the Earth and it's core rotate at different speeds the electromagnetic force is strong. This is called a dynamo effect (the same effect as a simple generator with permanent magnets that powers for example the lights on a bicycle).

See article on the dynamo effect by following the link below: Sources and related links

Read more: How_is_earths_magnetic_field_created

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Related Questions

What is the leading theory for what causes earth's magnetic field?

The Dynamo Theory it what causes Earth's Magnetic Field


Where does the convection that causes earths magnetic field?

The convection that causes Earth's magnetic field happens in Earth's molten outer core.


What layer produces a magnetic field around the earth?

The outer core of the Earth, composed mainly of molten iron and nickel, produces the magnetic field that surrounds the Earth. The movement of this liquid metal creates electric currents, generating the planet's magnetic field.


What layer created earths magnetic field?

Earth's magnetic field is created by the movement of molten iron and nickel in the outer core of the planet. This movement generates electric currents, which in turn produce the magnetic field that surrounds Earth.


What are the causes of magnetic drift?

Magnetic drift can be caused by changes in the Earth's magnetic field, variations in the solar wind interacting with the Earth's magnetosphere, and disturbances in the ionosphere. Other factors like geological processes and human-made magnetic fields can also contribute to magnetic drift.


What part of the earth is responsible for the magnetic field?

The Earth's magnetic field is generated by the motion of molten iron and nickel in its outer core. This motion creates electric currents, which in turn produce a magnetic field that extends into space and surrounds the planet.


What is the area that surrounds the earth's core?

The mantle.The area that surrounds the entire core is the mantle.


What causes the magnetic force in the Earth?

A rotating core of iron.


Is there a electromagnetic field around the earth?

Yes, the Earth has a magnetic field that surrounds it called the magnetosphere. This field is generated by the movement of molten iron in the Earth's outer core and helps protect the planet from harmful solar radiation.


What characteristic of the earth's interior is likely to be responsible for the earth's magnetic field?

The movement of liquid iron in the outer core of the Earth is likely responsible for generating the planet's magnetic field. This movement creates electric currents, which in turn produce the magnetic field that surrounds the Earth.


What are the causes of magnetic fields?

Earth's magnetic field is produced by the dynamo effectin the liquid metal outer core.


Is magnetosphere a part of the earth's atmosphere?

No, the magnetosphere is not part of the Earth's atmosphere. It's the region surrounding the Earth where the planet's magnetic field interacts with solar winds. The atmosphere is the layer of gases that surrounds the Earth.