Select filters and click "Update Map" to load data.
Guidance: Observe the map with the plate layer toggled on. Earthquakes often cluster along or near plate boundaries, where tectonic plates interact.
Guidance: Click "Update Map" with the filter set. Identify the largest circle marker. Click it to see the popup details (magnitude, depth, location). The color indicates depth (Red=Shallow, Orange=Intermediate, Blue=Deep). Use the link for the official USGS report.
Guidance: Update the map for each filter and note the count displayed below the map. You'll likely see significantly more M2.5+ events than M4.5+, illustrating that smaller earthquakes are much more frequent.
Guidance: Look at the dominant color of the earthquake markers after updating the map. This region often experiences shallow to intermediate depth earthquakes. Check the legend for color meanings.
Guidance: Visually inspect the map after updating with the filter. See which city marker is nearest to the cluster of earthquake circles.