Learning Task 1: Study the activity. Follow the procedure before answering the questions. Materials: Find the Epicenter (Adapted and modified from the Learner's Material) Hypothetical records of earthquake waves Philippine map Drawing compass and ruler Marking pens (3 different colors) Procedure: Study the data showing the difference in the arrival time of P-wave and S-wave on three seismic recording stations. Recording station Occidental Mindoro Samar Zambonga del Norte a Time difference in the arrival time of P-wave and S-wave (seconds) 40 32 36 Distance of epicentre from the station (km)​