Question

1. how many seismic stations need to be involved in order for scientists to locate the epicenter of an earthquake?

○ 1
○ 2
○ 3
○ 4

Explanation:

Locating an earthquake's epicenter uses triangulation. One station gives a distance (circle), two stations give two intersecting circles (two possible points), three stations give a single intersection point (the epicenter).

Answer:

3