Distinguish between magnetic and non-magnetic materials, and recognize the various shapes artificial magnets take.
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Introducing how magnets only attract specific things.
Definitions of magnetic and non-magnetic materials.
Not everything sticks to a magnet. Materials that are attracted towards a magnet are called magnetic materials.
The most common magnetic material is iron. Other metals like nickel and cobalt are also strongly attracted to magnets.
Visual sorting of items by magnetic property.
Magnets only attract specific materials, leaving things like wood, plastic, and glass completely unaffected.
Test on categorizing materials.
Not all objects in our environment interact with magnets in the same way. Materials that are attracted to a magnet, like iron and , are called materials. Other metals with this property include nickel. On the other hand, materials like wood and plastic are . If you bring a magnet near them, nothing happens. Interestingly, the pull of a magnet can still travel straight through a piece of or cardboard without being blocked.
History of lodestone and the creation of various magnet shapes.
Long before we manufactured them in factories, sailors and travelers used naturally occurring magnets. These ancient, natural magnets were rocks known as lodestones.
Diagram displaying the 6 common magnet shapes.
Artificial magnets can be manufactured in many different shapes to suit specific needs.
Match the name of the magnet shape to its physical description.
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Definitions