Science
Earthquake Science Deep Dive Quiz
Fault lines, seismic waves, and tectonic forces — explore the science of earthquakes
Fault lines, seismic waves, and tectonic forces — explore the science of earthquakes
The Pacific Ring of Fire hosts approximately 81% of the world's largest earthquakes and roughly 75% of active volcanoes. The most powerful earthquake ever recorded was the 1960 Valdivia earthquake in Chile, with a moment magnitude of 9.5. The moment magnitude scale (Mw) has largely replaced the older Richter scale for measuring the energy released by large earthquakes.
Each round presents 10 randomized questions from a pool of 50, with four multiple-choice options and instant feedback after every answer. Your final score comes with a performance tier and shareable results.
You'll explore divergent, convergent, and transform plate boundaries; P-waves, S-waves, and surface waves; and how early warning systems like Japan's EEW and ShakeAlert on the US West Coast detect seismic events. The quiz also covers induced seismicity from wastewater injection, paleoseismology of the Cascadia Subduction Zone, and the physics of elastic rebound theory.
Most earthquakes occur where tectonic plates interact — diverging at mid-ocean ridges, converging in subduction or collision zones, or sliding past each other at transform faults. Stress builds in locked rock until it ruptures, releasing seismic energy in an event described by elastic rebound theory.
Networks of seismometers detect the fast-traveling P-waves (5-8 km/s) of an earthquake and calculate its location and magnitude before the slower, more damaging S-waves and surface waves arrive. Systems like ShakeAlert and Japan's J-Alert can then send seconds-to-minutes of warning to nearby populations.
The 1960 Valdivia earthquake in Chile measured a moment magnitude of 9.5 — the largest ever instrumentally recorded. It triggered a Pacific-wide tsunami that struck Hawaii, Japan, and the Philippines.
Last updated: April 2026