RLECS Passive Buzzer Module for Arduino/Raspberry, Speaker Play Song Melody Sound Module

hey guys what's going on what I have in front of us right now is one active buzzer this one one passive buzzer this guy and then we have a speaker from a cheap toy and this one has no resistance rating no voltage rating nothing at all so all right let's start with these guys these guys are piezo buzzer is what a piezo buzzer is that it has a thin electrical plate inside it which is made of a piezoelectric material that basically vibrate mechanically whenever a voltage is applied to it the same principle as a quartz crystal that's used in watches which also vibrates whenever energy is applied to it or vice versa so keep in mind that these are called buzzers and sometimes they're called speakers but I think speaker is misleading they should be called just buzzers because they can only play tones melodies and the contrary play music or sound effects or human voice and actually I don't thin