How does energy from an earthquake reach earths surface

Well,

When the earthquake occurs at the focus, the motion travels up toward the surface directly above the focus.  Then that point (on the surface) is called the epicenter, and from there the earthquake propagates across the surface.

Egirls? nah. galaxy or a milky way. i think

The independent variable in this experiment is the angle at which the light from the ray box strikes the mirror.hope this .