Educational worksheet about historical tsunamis, including Lisbon (1755), Krakatau (1883), and Northern Chile (1868), with illustrations and space for research notes.

- The 1755 Lisbon earthquake, one of the most destructive in history, triggered a massive tsunami that devastated the Portuguese coast and parts of North Africa. Waves reached up to 30 feet high, flooding the city’s harbor and lower districts, killing tens of thousands and reshaping European philosophy and disaster preparedness.

- The 1883 eruption of Krakatoa in Indonesia generated a series of catastrophic tsunamis. The largest waves, estimated at over 100 feet, obliterated coastal villages on Java and Sumatra. The event killed more than 36,000 people and was heard thousands of miles away, becoming a landmark in volcanology and tsunami science.

- The 1868 Arica earthquake (then part of Peru, now northern Chile) produced a powerful tsunami that affected the entire Pacific Rim. Waves reached as far as Hawaii, New Zealand, and Japan, causing widespread destruction along the South American coast and killing an estimated 25,000 people. It highlighted the transoceanic reach of seismic tsunamis.