Go to the Cracked Plates Earth Science GeoInquiryby Esri.
Step 5 Zoom out so that the world is inview.
Step 6 Click on Content on the left-side of thewindow.
Step 7 Click on “Global Quakes of Large Magnitude 5.8 orGreater” checkbox.
16. Describe the patterns of earthquakes. Where are theearthquakes located? (Your response should be at least twosentences in length).
Step 8 Uncheck “Global Quakes of Large Magnitude 5.8 orGreater”.
Step 9 Click on the “Absolute Plate Motions” checkbox.This is showing the distance in millimeters that a plate moves inone year.
a. Which tectonic plate has the highest rates of platemovement?
b. What is the range in millimeters shown for this tectonicplate?
Step 10 Uncheck “Absolute Plate Motions”.
Step 11 Zoom in on South America and click on the “SouthAmerican Quakes” checkbox.
Step 12 When you hover over the South American Quakesheading on the left (next to the checkbox), you see additionaloptions. Click on the table icon to show the datatable.
Step13 Review the data in the table. Features means thenumber of earthquakes shown on the map.
c. How many earthquakes (features) are shown?
Step 14 Click on Year and sort both ascending anddescending so that you can see the range of years that the dataincludes.
d. What years of data are included in the table?
Step 15 Click on Magnitude and sort by both ascendingand descending so that you can see the range ofmagnitudes.
e. What is the range of earthquake magnitudes included in thetable?
Step 16 Click on Depth and sort both by ascending anddescending so that you can see the range of depths (data is shownin kilometers).
f. What is the range of earthquake depths included in thetable?
Step 17 Analyze the location of the South Americanearthquakes.
g. What type of plate tectonic boundary is found where most ofthe earthquakes occurred?
h. Do all of the earthquakes occur right on the boundary?
Step 18 When you hover over the South American Quakesheading on the left (next to the checkbox), you see additionaloptions. Click on the Change Style icon (it is the three shapes-triangle, square, and circle).
Step 19 Next to 1, change “Show location only” to”Depth”.
Step 20 Click the blue “DONE” button.
Step 21 Analyze the location of the deepestearthquakes.
i. Explain the location of the deepest earthquakes based on theplate tectonic boundary type. Include a labeled cross-sectionsketch of the boundary type.