I am not able to intuitively sense the concept of resonance. Let us say we have a building having a fundamental frequency of 5.5 Hertz . If the ground moved to and fro(during an earthquake) with a frequency of 5.5 Hertz, the building would vibrate strongly, or resonate.Right? I am not able to sense the phenomenon of resonance intuitively--- IF the fundamental frequency of the ground and building are same, then the building would vibrate strongly.How to sense this intuitively??