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 ...

Waves in water are transverse. This means that the vibrations causing the waves are perpendicular to the direction of energy transfer. As this little boat demonstrates, you can see that the waves are ...

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, ...