How many earthquakes?
under development. This activity will build on the the plotting exercise and encourage students to think about the number of earthquakes per year. We will provide annual lists of seismicity. This exercise can also be used in math lessons to study the statistics. • Earthquake Depth – This Web page is not an exercise but does have a number of figures which illustrate the complexities of earthquake depth. Cross sections through the upper 800 km of the Earth illustrate the subduction zones of South America, Tonga, Japan, and Alaska. • Earthquake Maps and Lists – This document consists of earthquake lists and maps with various projections. The figures can be used in the classroom to illustrate the distribution of seismicity as well as compared to current seismicity maps from the NEIC. • Search the Global Earthquake Catalog – The “Earthquake Maps and Lists” were generated from searches of this catalog. You can enter your own search criteria – latitude, longitude, time period, and magnitude c
