1.because earth acts like a bar magnet and we had imagined that there is a magnet in earths core
The interior core contains many nuclear properties which gives of huge amounts of heat which then heats the core.
Jupiter. Ithas by far the most powerful magnetic field of all the planets in our solar system.
Earth has a molten liquid core containing iron. It is believed that as it moves or spins, it creates an electric current that causes a magnetic field around the Earth. The field is believed to be created by this dynamo action. The magnetic field makes the Earth act like a huge magnet so it attracts like one. That's why it pulls the magnetized needle in a compass and makes it point in the general direction of the North Pole.>alryan< add me on facebook: alryanupi@yahoo.com
The CORE organization stands for Congress of Racial Equality. This organization played a huge role in the American civil rights movement to gain equal rights for African Americans.
The primary source of heat energy driving plate tectonics on Earth is radioactive decay in the planet's interior. This process generates heat through the decay of radioactive elements within the Earth's core and mantle, resulting in convection currents that drive the movement of the planetary plates.
For one, the magnetic field changes continuously; this is not consistent with a permanent magnet.
The interior core contains many nuclear properties which gives of huge amounts of heat which then heats the core.
The Earths Core can be broken into two pieces the inner core and the outer core. The Inner Coreis made of SolidIron. The Outer Core is made of Liquid Iron.
The moon is a huge ball of rock, chemically similar to the rocks of the Earth's crust and mantle. It does not have a core of nickel and iron, unlike the Earth.
No, the earth is itself a huge magnet.
An electro-magnet can be switched on & off - a bar magnet is 'permanent' Think of a scrap-yard. If the magnet they use to pick up huge quantities of metal were permanent, they'd have to manually remove every piece. With an electro-magnet, they simply turn the power on to pick up a load, and off when they want to release it. You can make your own electro-magnet with a battery, some wire and a large nail.
An electromagnet can be turned "off" and "on". It was one of the great benefits verses a permanent magnet. If you'll watch video of a salvage yard, you will notice they hoist huge electormagnets to pick up scrap metal, and then cut the magnetism so that they can drop the debris in a desired location
Heating a magnet can weaken or even destroy its magnetic properties. This is because increased temperature can disrupt the alignment of the magnetic domains within the magnet, causing it to lose its magnetization.
The Oceans stores the huge amounts of the sun's heat.
No, it causes a huge decrease in speed.
It is an iceberg.
The effect is entirely natural and happens because Earth has a molten outer core made of Iron which is convecting. When such a body is then rotated (spun on its axis) natural magnetic fields and electric currents are generated in it. These are the source of Earth's magnetic field.