TED-ED: How tsunamis work - Alex Gendler

The video discusses the historical tsunami event in Potidaea in 479 BC, believed to be caused by Poseidon but likely a natural tsunami. It explains how tsunamis form from underwater energy sources like earthquakes and volcanic eruptions, and how they differ from regular waves. The video details the dynamics of tsunamis, including wave shoaling and their devastating impact on coastal areas. Historical events like the 2004 Indian Ocean tsunami are highlighted, emphasizing the massive destruction and loss of life. The video concludes with current efforts to mitigate tsunami damage, such as sea walls and early detection systems, while acknowledging the challenges faced, as seen in the 2011 Fukushima disaster.

What event in 479 BC is described in the text, and how did it relate to the concept of tsunamis?

Explain the difference between tsunamis and regular ocean waves.

What causes tsunamis, and how do they form?

What is wave shoaling, and how does it affect the height of a tsunami?

Discuss the measures that can be taken to protect against tsunamis as mentioned in the text.