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Understanding Tsunamis: Causes, Measurement, and Locations

Test your knowledge of tsunamis with this quiz and review guide. Begin by jotting down your name on a piece of paper before the quiz starts! Questions cover critical aspects such as how many locations are needed to locate an epicenter and the scales used to measure earthquakes. Learn about the formation of tsunamis, their wavelengths, and the impact of geological events like underwater earthquakes and landslides. This resource highlights significant tsunami occurrences and emphasizes the importance of awareness for all coastal regions.

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Understanding Tsunamis: Causes, Measurement, and Locations

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  1. Quiz/Review • Get out a small piece of paper and put your name on it. • When the bell rings, the quiz will begin.

  2. Question 1 • 1.) How many location are needed to locate an epicenter?

  3. Question 2 • What is one scale used to measure and earthquakes size?

  4. Question 3 • 3.) Calculate the S-P timeS-wave 01:21:10P-wave 01:18:18

  5. Answers • At least three (3) • Richter or mercalli • 00:02:52

  6. Tsunami NOT TITAL WAVES!!

  7. Types of waves (confusion) Tsunami Wave Tidal Wave Caused by the gravitational force between earth and the moon. 1-100 meter wavelength. • Caused by under water earthquake or landslide. • 100-1000 kilometers wavelength

  8. Tsunami 101- the basics

  9. Location • Most tsunamis form near convergent plate boundaries under water. • However waves can and will flow over the whole ocean so ALL coastal cities need to be aware.

  10. Formation of a Tsunami

  11. 2011 Japan

  12. Tsunamis from a landslide • Some large “mega-Tsunamis” have been formed from landslides. • Litya Bay, Alaska 1470 foot tsunami restricted to bay. • Many large volcanoes • CumbreVieja in the Canary Islands • Might create 2000 foot tsunami in the Atlantic Ocean!

  13. Other tsunamis • Impacts from meteors and asteroids. (ask the dinosaurs) • Can happen in large lakes!Also called seiche • 1847 & 1854 Lake Ontario! (creepy huh)

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