@beatequation: How a tsunami moves, and what it sounds like 🌊🔊 Japan 2011: a M9.1 quake lifted the seafloor up to 10 m. In deep ocean the wave runs at √(g·d), about 710 km/h, as fast as a jet. Near shore it slows down and grows taller. Every stage is a function you can hear. Which stage hit hardest? 👇 #mathtok #physics #tsunami #science #math