Suggest one reason why the kettle can only be made of metal and not wood?
Very - probably well over 90%. An electric kettle is very efficient, especially if the body is made from plastic rather than metal; almost all of the electrical energy used goes into heating the contents rather than the container. A metal bodied kettle used on a gas stove would be significantly less efficient.
How is all of the water in a tea kettle can be the same temperature even if the kettle is heated only from the bottom?
An electric kettle is made up of several vital parts. The holder to hold the water, a heating element and a insulating rim. First electricity from the mains, heats up a heating element in the base of your kettle. This is conduction. There is a metal plate at the bottom of the container. This is in contact with heating element in the base. The heat in the element conducts the metal plate, causing it to…