Magnetism

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What is magnetism?

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Magnetism is a physical phenomenon produced by the motion of electric charge, which results in attractive and repulsive forces between objects.

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What are magnetic poles?

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Magnetic poles are the regions of a magnet where the magnetic force is strongest. Every magnet has a north pole and a south pole.

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What happens when like poles of magnets are brought together?

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Like poles repel each other; for example, north-north or south-south poles will push away from each other.

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What happens when opposite poles of magnets are brought together?

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Opposite poles attract each other; for example, north-south poles will pull towards each other.

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What is a magnetic field?

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A magnetic field is the area around a magnet where magnetic forces can be felt. It is represented by magnetic field lines.

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What are magnetic field lines?

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Magnetic field lines are imaginary lines that represent the direction and strength of a magnetic field. They emerge from the north pole and enter the south pole.

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What materials are considered magnetic?

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Materials that can be magnetized or are attracted to magnets, such as iron, nickel, and cobalt, are considered magnetic.

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What is an electromagnet?

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An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. It can be turned on and off.

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How does cutting a magnet affect its poles?

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When a magnet is cut in half, each half becomes a new magnet with its own north and south poles.

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What is the Earth's magnetic field?

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The Earth's magnetic field is the magnetic field that surrounds the Earth, similar to a giant bar magnet, with a north and south pole.