Beneath every perfect wave is a formula of wind, swell, and seafloor. But for those who chase them, the ideal ride is part science, part soul. Carson’s words reflect something surfers have long ...

Seismologists have just registered an earthquake in Seward, Alaska, that is big enough to produce a tsunami. The ocean depth is 4,000 meters. Use the wave speed formula to approximate the tsunami's ...

Review subduction zones and how earthquakes occur in these zones. (See Activity Answer for more information.) Draw a subduction zone on the board and review with students how the December 26, 2004, ...