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questionedithistorytranslations
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flag English language

How fast do tsunami waves travel across the open ocean?
about 20 km/h
about 100 km/h
up to 300 km/h
up to 800 km/h
Where the ocean is over 6,000 meters (3.7 miles) deep, unnoticed tsunami waves can travel at the speed of a commercial jet plane, over 800 km per hour (500 miles per hour). Tsunamis travel much slower in shallower coastal waters where their wave heights begin to increase dramatically.
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news.nationalgeographic.com
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Very interesting!

flag Polish language

Z jaką prędkością mogą poruszać się fale tsunami?
około 20 km/h
około 100 km/h
do 300 km/h
do 900 km/h
Fale rozchodzą się pierścieniowo od miejsca jej wzbudzenia. Na pełnym morzu przejście fali tsunami, poruszającej się z wielką prędkością (do 900 km/h), może być nawet niezauważone, ponieważ długość tych fal dochodzi do kilkuset kilometrów, ale ich wysokość nie przekracza kilkudziesięciu centymetrów.
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wikipedia → Tsunami
4
Very interesting!
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