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The Earth's core is made of iron surrounded by a molten liquid which is radio active and generates heat to keep it in a liquid state. When an electrical conductor moves in a tiny magnetic field it tends to amplify,or self excite, this effect and set up a much larger field. This tiny starting field could have been supplied in the form of the charged Solar Wind.
The spin of the Earth and it's progression round the Sun have existed from the birth of the Solar System but the Moon was subsequently made in a cataclysmic collision with the Earth. Perhaps this event kick started the field. We owe our existence to this field since it protects us from deadly high energy particles from Space. This field reverses every 100,000 years as shown in the rocks of sea floor spreading.
What else can I help you with?
What does the presence of a magnetic field on Earth compared with other terrestrial plants indicate?
Plants don't have a significant magnetic field. Perhaps you mean "planets"?
How can you tell that the Earth has a magnetic field?
Hang a magnetized object from a thread attached to its midpoint, so that it balances with its poles at the same level, like a propeller.Notice that regardless of what position you point it, it has a direction in which it wants to point, and when you let it go, it always rotates itself to that direction.An identical object that's NOT magnetized won't behave that way.
What is polar cusp?
The polar cusps, located above each pole, are funnel-shaped areas with near zero magnetic field magnitude in the Earth's magnetic field where solar wind particles have direct access to the Earth's ionosphere.
Why does the mineral lodestone align with the north?
Lodestone is a naturally magnetized form of the mineral magnetite, which contains iron oxide. It possesses a permanent magnetic field due to the alignment of its iron atoms, which allows it to interact with Earth's magnetic field. When freely suspended, lodestone aligns itself with the Earth's magnetic poles, with one end pointing toward the magnetic north and the other toward the magnetic south. This property makes lodestone historically significant in navigation and compasses.
How does Earth's magnetic field behave through long periods of geologic time?
It fluctuates, including periodic reversals.
Does Uruguay have a magnetic field?
The earth as a single object has a magnetic field. If Uruguay is part of the earth, it shares the earth's magnetic field.
Why Auroras do not happened near equator?
The auroras that are experienced near the polar regions occur because of the strength of the earth's magnetic field. The magnetic field is not very strong at the equator.
What is resion of Earth magnetic field?
The Earth's magnetic field is the result of electrical currents flowing in the earth.
What evidence suggests that earth's magnetic field may swap around in the futurw?
Evidence from magnetic minerals in ancient rocks suggests that Earth's magnetic field has reversed multiple times in the past. These reversals are recorded in the geological record as "flip-flops" of the magnetic field's orientation. Additionally, studies of the Earth's magnetic field strength and its decreasing intensity over time support the idea that a reversal may occur in the future.
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.
Where the vertical component of earth's magnetic field is zero?
The vertical component of Earth's magnetic field is zero at the magnetic equator, where the magnetic field lines are horizontal. At the magnetic equator, the magnetic field lines run parallel to the Earth's surface, resulting in a zero vertical component.
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 moon have a stronger magnetic field than the earth?
No, the moon does not have a global magnetic field like Earth. Some localized magnetic fields have been detected on the moon's surface, but they are much weaker than Earth's magnetic field.
Where does the convection occur that causes the Earth's magnetic field?
Convection occurs in the Earth's outer core, where the movement of molten iron and nickel creates electric currents. These electric currents generate the Earth's magnetic field through a process known as the geodynamo.
Earth's magnetic field is believed to be generated from what region?
If you mean the region of influence of the earth's magnetic field then its called the earth's magnetosphere
Where in the Earth do magnetic fields occur?
Magnetic field lines are not a real observable thing, they are a tool used in physics to picture magnetic fields. A magnetic field is a continuous entity; it has no discrete force lines.
Does the earth have a magnetc field?
Yes, the Earth has a magnetic field.
