@beatequation: How a volcano blows, and what it sounds like 🌋🔊 Mount St. Helens gave 2 months of warnings: thousands of quakes, steam, a humming tremor, a bulge growing 1.5 m a day. Then at 8:32 am a M5.1 quake let the whole north side go. Every reading is a function you can hear. Which stage hit hardest? 👇 #mathtok #physics #volcano #science #math