A special magnetic field exists on the earth, the time–Varies with time. These fields are created by constantly moving electric charges. How important it is can be gauged from the fact that if it is not there, life cannot exist on earth. So let’s know about it today.
How is the Earth’s magnetic field formed?
Earth’s magnetic field Produced by the movement of molten iron inside the outer core. When this liquid metal starts flowing, it generates electric currents, which in turn produces a magnetic field. However, the Earth’s magnetic field is visually similar to that of a bar magnet, which has the north and south poles, But it is not that stable because it is produced through complex processes inside the Earth. Due to these processes the magnetic poles get displaced.
Its North Pole changes every year for about moves at a speed of 15 kilometers , but Since the 1990s its speed has increased further and now it is moving almost towards Siberia moving at a speed of 55 kilometers per year . Though it may be a ‘Magnetic reversal‘ indicates. in which the magnetic north and south poles switch places. previous 71 million years ago has happened 171 times. Now that time has come again.
What will happen if there is no magnetic field on earth?
Now just think what will happen if this magnetic field does not exist on the earth? So scientists have discovered magnetic reversals by measuring the magnetic fields on both sides of the mid-Atlantic ridge , You will be surprised to know that at this place molten rock comes out of the tube like toothpaste. like–As it becomes solid, Its crystals gather in the direction of the Earth’s magnetic field. This change is believed to take place over a period of one thousand to ten thousand years.
The presence of magnetic field on earth is very important for our life too . Actually, The Earth’s magnetic field extends far into space, creating a protective bubble around the Earth, which exposes the planet’s surface to the Sun ‘Solar wind‘ ‘s particles and high-energy radiation coming from deep space ‘Cosmic rays‘ Protects from particle storms. For all these things, the presence of the Earth’s magnetic field is very important.
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