10 Questions
What are the two properties possessed by lodestone?
It attracts small pieces of iron and sets itself along a definite direction
What is the origin of the word 'magnet'?
From the place 'Magnesia' where the ore was found
Why are artificial magnets prepared from iron?
Because iron is easily available and can be shaped conveniently
What happens when a freely suspended magnet is allowed to rotate in a horizontal plane?
It always points in the geographic north-south direction
What is the polarity named when an end of the magnet rests in the geographic north direction?
North polarity
What happens when two like poles of magnets are brought close to each other?
They repel each other
Why were natural magnets found to be inadequate for use?
They were not magnetically strong enough for use
How did the Chinese use pieces of lodestone earlier than 2500 B.C.?
To guide their boats
What ore was used to make the first known magnets?
Iron oxide (Fe3O4)
What are artificial magnets prepared from?
Iron
This quiz provides an introduction to the origins and properties of magnets, focusing on the first known magnets made of lodestone. It covers the attraction to iron and the ability to align along a specific direction, as well as their historical use in guiding boats.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
