Practical ideas

Use cases

For exploration and learning—never for emergency decisions.

Teach with primary data

Compare tectonic regions, depth and magnitude, then open the USGS record.

Review recorded activity around a destination, then consult official civil-protection guidance.

Verify time, magnitude, depth and catalogue revisions before sharing numbers.

Enter coordinates to study recorded frequency with an explicit threshold, radius and period.

Source and limitations

Data: U.S. Geological Survey. This is an educational tool, not an alert system or seismic-hazard study.