Forces of Nature is a film produced by National Geographic designed to educate students about volcanoes, earthquakes, hurricanes, and tornadoes. The Forces of Nature website provides a nice list of complete lesson plans for teachers of students in grades K through 12. Even if you can't get a copy of the movie, most of the lesson plans and activities are still very usable. Teachers of grades K through 6 may also want to check out the National Geographic Kids page titled Ten Freaky Forces of Nature.
Shape It Up is one of many good educational games and activities on Kinetic City. Shape It Up is an activity that would be good for use in an elementary school Earth Science lesson. The activity presents students with "before" and "after" images of a piece of Earth. Students then have to select the force nature and the span of time it took to create the "after" picture. If students choose incorrectly, Shape It Up will tell the student and they can choose again.
Stop Disasters is a game designed for students to learn about natural disasters, disaster prevention, and city design. There are five game scenarios that students can play. Students can plan to prepare for hurricanes, floods, earthquakes, wildfires, and tsunamis. The scenarios are set in geographically accurate contexts of Europe, Asia, Australia, and the Caribbean.
The USGS produces a good assortment of resources for teaching and learning about earthquakes. The USGS has resources for teachers and for students on every grade level from elementary school through college. Not included in the teachers resource section, but including in the general education page, are these flash animations of earthquakes and seismic activities. For Google Earth users the USGS produces Google Earth files for viewing earthquakes. One set of Google Earth files that the USGS produces allows you to view seismic activity in near-real time (the file refreshes every five minutes).