A series of colossal earthquakes have struck Japan, triggering a massive tsunami that has swept away everything in its path. The first and strongest shock, 8.9 magnitude, was the strongest to hit Japan in 140 years.
Here is a link to the Guardian's website (online news site), which features an article about the situation in Japan, as well as the video that you saw in class.
Earthquake and Tsunami in Japan 3/11
This link features a well-produced news video about the earthquake and tsunami in Japan, put together by CNN. You did not see this one in class, because it is newer!
Earthquake/Tsunami in Japan - Coverage by CNN
Picture Source: http://www.salon.com/news/earthquakes/?story=/news/feature/2011/03/11/japan_earthquake_video_tsunami