A seismometer (also known as a seismograph) detects, amplifies and records earthquakes as well as other ground motion. Here's how you can make your own, using materials commonly found in the home, with University of Canterbury Geology PhD student Sam Davidson. Learn more and download printable instructions at https://www.canterbury.ac.nz/science/outreach/learning-resources/learn-from-home/homemade-seismometer/