Geography - Tectonics 0.0 / 5 ? GeographyNatural hazardsA2/A-levelEdexcel Created by: izzyshippCreated on: 16-05-18 14:06 How much of the island is uninhabitable? Two thirds. 1 of 8 How are volcanoes measured? Volcanic Explosivity Index. 2 of 8 How can volcanoes be predicted? Due to small Earthquakes, changes to the volcanoes surface or changes to the tilt of the volcano. 3 of 8 What is the water column? The area of sea water from the surface to the sea floor. 4 of 8 What is the cause of a Tsunami? Most are caused by underwater earthquakes along subduction zones. 5 of 8 Describe an early warning system. These are systems that use seismic sensors to detect undersea earthquakes. The provide a warning before the Tsunami hits the coastline. 6 of 8 Which country has the most extensive warning systems? Japan. 7 of 8 How many people in Indonesia died or are missing as a result of the Indian Ocean Tsunami? 236,169 8 of 8
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