Megatsunamis: World's Biggest Wave

What was the approximate height of the megatsunami that devastated Nuugaatsiaq, Greenland, in 2017?

• 50 meters

• 100 meters

• 150 meters

• 200 meters

What is the primary factor that distinguishes a megatsunami from an ordinary tsunami?

• Its overall size

• The speed at which it travels

• The way it is formed

• The depth of the water where it occurs

What natural event caused the megatsunami in Greenland?

• An underwater earthquake

• A volcanic eruption

• A massive landslide

• A large meteor impact

How did scientists discover evidence of a past megatsunami on Lanai, Hawaii?

• By finding ancient shipwrecks on mountain tops

• By observing unusual erosion patterns on the coastline

• By discovering limestone rocks high above sea level

• By analyzing historical records and local legends