Earthquakes Explained — Causes, Seismic Waves, Hazards, and Prediction | Chapter 10 from Earth: Portrait of a Planet
Earthquakes Explained — Causes, Seismic Waves, Hazards, and Prediction | Chapter 10 from Earth: Portrait of a Planet Why do earthquakes strike without warning, and how do scientists measure and predict these violent pulses of the Earth? In Chapter 10 of Earth: Portrait of a Planet by Stephen Marshak, we journey into the heart of seismic science—discovering how earthquakes occur, what hazards they cause, and how societies can prepare. For a full podcast summary, watch the YouTube chapter video or explore the detailed written breakdown below. How and Why Do Earthquakes Occur? Earthquakes are sudden releases of energy caused by the stick-slip motion along faults, when built-up stress finally overcomes friction. This process is known as the elastic rebound theory . The initial rupture point is called the hypocenter , while the location directly above it at the surface is the epicenter . Earthquakes can be preceded by foreshocks and followed by aftershocks . Types of Faults a...