Podcast
Questions and Answers
What is the primary use of lodestone in ancient times?
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.
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?
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 _______.
When a magnet is suspended freely, it aligns itself with the Earth's _______.
Match the following terms with their definitions:
Match the following terms with their definitions:
What occurs when a magnetic material is placed near a magnet?
What occurs when a magnetic material is placed near a magnet?
Induced magnetism lasts indefinitely even after the inducing magnet is removed.
Induced magnetism lasts indefinitely even after the inducing magnet is removed.
What happens to the strength of the magnetic field as the distance from the magnet increases?
What happens to the strength of the magnetic field as the distance from the magnet increases?
Magnetic field lines are directed from the ______ pole to the ______ pole outside the magnet.
Magnetic field lines are directed from the ______ pole to the ______ pole outside the magnet.
Flashcards
Lodestone
Lodestone
A natural magnet found in ancient times, made of iron oxide (Fe3O4).
Magnetic Attraction
Magnetic Attraction
The ability of a magnet to attract small pieces of iron.
North Pole
North Pole
A magnet's north-seeking end.
South Pole
South Pole
Signup and view all the flashcards
Induced Magnetism
Induced Magnetism
Signup and view all the flashcards
Magnetic field lines
Magnetic field lines
Signup and view all the flashcards
Magnetic field strength
Magnetic field strength
Signup and view all the flashcards
Induced Magnetism: How It Occurs
Induced Magnetism: How It Occurs
Signup and view all the flashcards
Induction Precedes Attraction
Induction Precedes Attraction
Signup and view all the flashcards
