the tiltmeter is an instrument that is used to measure changes in the tilt of the ground. the ground near volcanos moves before a volcano erupts, so scientists use tiltmeters to predict when a volcano may erupt. scientists want to place a tiltmeter in a location where people can be quickly alerted when a volcano is going to erupt. which location for the tiltmeter is best and why? here are the choices. where is the best place to put the tiltmeter to warn people about the volacno?