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Some people use fridge magnets to keep notes or lists on the fridge’s door. You even get magnets in the shape of words or letters that you can put on a fridge door to play with. The magnets make the letters stick to the metal of the fridge door.
Can you think of other ways in which magnets can help us in our daily lives?
In this chapter, you will learn about different types of magnets and how we use them in everyday life.
Thousands of years ago, humans discovered that a certain type of rock could attract iron. This rock was called lodestone. People believed that it had magical powers! Pieces of lodestone would also push or pull other pieces of lodestone.
The ability to attract iron is called magnetism.
We now know that lodestone contains a material called magnetite, which is a kind of iron oxide. Iron oxides are chemical compounds of iron and oxygen. “Lodestone” is a natural magnet.
All magnets are able to attract other magnets or magnetic objects. Magnetic objects consist of iron or some other metals.
Experiment with a magnet to pick up paperclips. You will notice that if you hold the magnet far away, nothing happens. If you move the magnet closer to the paperclips, the paperclips will suddenly stick to the magnet.
Saylor - Organizational Body
1st Edtion
978-1-920705-01-5
NONE
Technology
Management
English
2014
1-152
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