Let's say an earthquake off the coast of Japan causes a series of identical tidal waves (or 'tsunamis') that move in the direction of the island of Midway in the middle of the Pacific ocean. These tidal waves, one after another, are all traveling at a speed of 360 km/hr toward the island. They approach the shore of the island such that after the initial wave crest hits the shore of Midway, other wave crests arrive in sequence every 12 minutes (so there are 5 waves/hr) - this is their frequency. Calculate how far apart the wave crests will be (in other words, find the wavelength of the tidal waves)... (see lecture slides) Question 17 options: 120 km 1800 km 72 km 30 km 60 km