Answer:
A kettle is something where you can make coffee or tea. You can also use them to heat up baby bottles. To heat up a baby bottle, press the button wait for the kettle to boil then you pour a bit of the hot water into a big cup, put the bottle in it and wait a couple of minutes. After a few minutes check to see if it's warm enough for a baby to drink.It is very useful for cleaning hard water by boiling.