The video in this resource provides a good introduction of earthquakes, it begins with a brief history of earthquakes to the engineering of buildings for earthquakes. The bonus images of rock formations are interesting to see. Although there is no activity with this video, a good extension would be to build some simple towers with marshmallows and toothpicks and test them on two clip boards and some ping pong or tennis balls placed between the boards secured with some rubber bands to simulate an earthquake and observe how well the tower stands during the shaking.