『Earthquakes: Why the Ground Shakes』のカバーアート

Earthquakes: Why the Ground Shakes

Earthquakes: Why the Ground Shakes

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概要

Every year, the ground beneath our feet shakes hundreds of thousands of times. Most quakes are too small to feel, but a few are powerful enough to level cities and send tsunamis racing across oceans. In this episode of Knowledge Central, we dig into what’s really happening deep underground when the Earth moves, how scientists measure it, and why predicting the next big one is still so hard.

In this episode:

  • Plate tectonics: the giant, slow-moving pieces of Earth’s crust
  • Faults, and how built-up stress releases in a sudden snap
  • The different types of seismic waves, and how they travel through the planet
  • The Richter scale versus the moment magnitude scale, and what the numbers really mean
  • The Ring of Fire, and why some places shake far more than others
  • History’s biggest quakes, from the 1960 Chile earthquake to the 2004 Indian Ocean tsunami
  • Why scientists still can’t predict earthquakes, and how early warning systems buy precious seconds

Watch the video version on YouTube at Knowledge Central.

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