What Do Earth's Mountains and Valleys Really Sound Like?

If you zoom in on the surface of a vinyl record using a microscope, to the untrained eye it kind of looks like a series of mountains and valleys. It's actually the waveform representation of a song or other sounds, but what would happen if you took a map of the Earth's mountains and valleys and turned that into a… »4/08/13 1:05pm4/08/13 1:05pm