What are three ways in which geologists use seismographic data?

It is used to map faults and detect changes along faults. Geologists are also trying to use this data to develop a method for predicting earthquakes. It uses a wire stretched across a fault to measure horizontal movement of the ground. Because earthquakes are all different and do not occur the same way every time.

Answer heart of american                  live in harmony                    hillsides of orchards                    blaze of color                    backdrop of pines;