Kettles are metal pots used for boiling water.
Kettles have been used since ancient times.
Kettles are made from metals such as iron, steel and copper.
Kettles used to be heated over open fires in order to heat them up.
Electric kettles were only invented in 1893 in the United Kingdom.
The part of the kettle that heats up the water is called a heating element.
The heating element in kettles can get very hot, so electric kettles should not be washed immediately after using them.
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