Go to the following Geotours Folder in Google Earth: 2. Exploring Geology Using

Question

Go to the following Geotours Folder in Google Earth: 2. Exploring Geology Using Google Earth ? Geotour Worksheets ? B. Plate Tectonics. Check the boxes next to “Seafloor Age Map” and “Earthquakes” folders to view the ages of oceanic crust around the world and selected 1986-2005 earthquakes color-coded by depth, respectively. Make the map semi-transparent. Also, in the Layers panel, turn on Borders and Labelsand Gallery ? Volcanoes.

Check and double-click placemark problem 3f to fly to South America. What is the depth of the majority of earthquakes directly beneath the volcanic arc associated with this subduction zone?

0-50 km

51-100 km

101-200 km

201-400 km

0-50 km

51-100 km

101-200 km

201-400 km

Explanation / Answer

Ans:- 51-100 km. The majority of earthquakes occur at Shallow depth down upto depeth of 70 kilometre.

Damage is greatest from Shallow depth earthquakes because seismic waves travel a shorter distance before reaching the surface.

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