Q1
The naturally occurring magnetic mineral is called:
Alodestone
Bgranite
Cmarble
Dquartz
CBSEClass 6 (CBSE)ScienceCh 4 · Topic 1
Discovering Magnets
Learning the history and natural occurrence of magnets.
Core concept
The word 'magnet' is believed to come from Magnesia, a region in ancient Greece where lodestone was found in abundance. Artificial magnets can be permanent (always magnetic, like a bar magnet) or temporary (magnetic only under certain conditions, like an electromagnet that works only when electricity flows through it). Understanding how magnets were discovered helps us appreciate how a natural phenomenon led to countless modern technologies, from MRI machines in hospitals to maglev trains.
Exam highlight
Key diagram
- Show a lodestone attracting iron filings alongside a modern bar magnet.
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Quick notes
• Magnetite (lodestone) is a naturally occurring magnetic mineral, the first magnet discovered.
• Ancient sailors used lodestone as an early compass.
• The word 'magnet' likely comes from Magnesia, a region in ancient Greece.
• Magnets can be permanent (always magnetic) or temporary (like electromagnets).