effects of an earthquake?

Answer 1

You shake a lot.

If you are near a shoreline, the movement can cause strong wave action up to and including tsunami-class waves.

If you had a lot of roads in the area, some of them might not be usable for a long time.

If you had a house near the center of motion, your odds of collecting on your house's earthquake policy become quite good.

What other effects might you wish to know about?