Along which path is the distance to the epicentre measured?
A) the distance around the outside circumference of the Earth between your station and the epicentre following a great circle route (like a line of longitude)
B) the shortest great circle route that passes through the north pole
C) the shortest distance through the Earth between the earthquake and your station (like the chord across a circle)
D) the longest great circle route that passes through your station

Question

Quizplus · Accepted Answer

The distance to the epicentre is measured along the shortest path on the Earth's surface that connects a point (your station) to the epicentre, which is a great circle route. This is because a great circle route represents the shortest distance between two points on the surface of a sphere, like the Earth.

Along Which Path Is the Distance to the Epicentre Measured