4.3+Doorbell

Our mechanism is a bell. It is connected to a battery. The battery is electric energy and then it is stopped by the switch. Pressing the button requires chemical energy and when it is pressed the electricity is able to flow through. A slight amount of heat energy is created when the electricity passes through the copper wires because it is a slight resistor, although it is a very good conductor. The copper wires have a small steel rod inside, and when electricity flows around the rod it turns into an electromagnet. there are two coils and electromagnets, so each one takes a turn to have electricity flow through it. The magnet attracts the rod and releases the stick after the current stops flowing through, thus creating the sound. It does this lots of times very quickly and it creates a continous sound. by Charlotte, Paula and Ann :)

Well done. So an energy diagram might look like this: Electrical energy --> kinetic energy (movement) --> Sound energy + Heat (waste)