The map below shows the population density of California, as well as the epicent
ID: 117004 • Letter: T
Question
The map below shows the population density of California, as well as the epicenters of 9 earthquakes that are significant either because of their magnitude or because of the amount of deaths/damage that they caused. The accompanying chart lists information for these earthquakes. 12. What are the similarities between the earthquakes? What are the differences? 13. Is there a direct relationship between the size (magnitude) of the earthquake and the amount of deaths/property damage? Explain, giving examples that support your answers. 14. Besides earthquake magnitude, what other factorts) do you think might affect the amount of deaths/property damage caused by an earthquake? California population density 2010 census data Credit: US Census Bureau Source of image for overley http://commons.wikimedia org wkm e : Caifornia population map ong Accessed: December 2013 Population per sq. mile 25.. .50 50.. . 100 00.. .250 250...500 500... 1000 1000..2500 2500.. . 5000 5000 or image Candsa Dat SIO, NOAA, Us Na.NGA CERCO Data LDtO-Columbia, NSF. NExplanation / Answer
12.The similarities between the earthquakes are that they occured near the destructive plate boundary.
The dissimilarities are that the population per square mile differed on the site of their occurance.
13.Magnitude on the Richter Scale is a fixed value of measurement based on recordings of ground movement called seismograms.
Intensity is an expression of the extent and distribution of damage caused by an earthquake. It is derived from a rough statistical analysis of local damaging effects on each type of building.
There is no such direct relation between magnitude and intensity. Usually increase in magnitude increases the intensity with respect to the area where it occured. Like in mountainous areas, even if the magnitude of earthquake is less, the intensity will be more.
14. Other factors include location and depth of earthquake, its distance from the epicentre, the geological conditions of the area, architecture of buildings and secondary factors like landslides,fires, floods etc affect the amount of damage caused by an earthquake.
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