Magnetism Basics Quiz
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Questions and Answers

What is the primary use of lodestone in ancient times?

  • For decorative purposes
  • To generate electricity
  • To create weapons
  • To guide boats (correct)
  • Like poles of a magnet attract each other.

    False (B)

    What happens to an unmagnetised bar of magnetic material when it is placed near a magnet?

    It becomes magnetised.

    When a magnet is suspended freely, it aligns itself with the Earth's _______.

    <p>magnetic field</p> Signup and view all the answers

    Match the following terms with their definitions:

    <p>North Pole = The end of a magnet that seeks the north direction South Pole = The end of a magnet that seeks the south direction Artificial Magnets = Crafted magnets made from iron Induced Magnetism = Magnetism acquired by a material when in the presence of a magnet</p> Signup and view all the answers

    What occurs when a magnetic material is placed near a magnet?

    <p>It experiences induced magnetism. (D)</p> Signup and view all the answers

    Induced magnetism lasts indefinitely even after the inducing magnet is removed.

    <p>False (B)</p> Signup and view all the answers

    What happens to the strength of the magnetic field as the distance from the magnet increases?

    <p>The strength decreases.</p> Signup and view all the answers

    Magnetic field lines are directed from the ______ pole to the ______ pole outside the magnet.

    <p>north, south</p> Signup and view all the answers

    Flashcards

    Lodestone

    A natural magnet found in ancient times, made of iron oxide (Fe3O4).

    Magnetic Attraction

    The ability of a magnet to attract small pieces of iron.

    North Pole

    A magnet's north-seeking end.

    South Pole

    A magnet's south-seeking end.

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    Induced Magnetism

    The process of making a material magnetic by bringing it close to a magnet.

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    Magnetic field lines

    The magnetic field lines are continuous paths that go from the north pole to the south pole of a magnet, both outside and inside the magnet.

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    Magnetic field strength

    The force of attraction or repulsion between magnets is strongest near the poles and weakens as you move away.

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    Induced Magnetism: How It Occurs

    A material becomes magnetic when its magnetic dipoles align themselves in the same direction.

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    Induction Precedes Attraction

    Before a magnetic material is attracted to a magnet, induction occurs. This means the material develops an opposite magnetic polarity.

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