Audience: Students; Grades: 4-8; Subject: Science. (2003) This program explores the concept of plate tectonics, explaining how various scientific discoveries provide evidence to support this theory. The geographic fit of the continents, continental drift, ocean floor magnetic fields, and sea-floor spreading are described. Graphics are used to illustrate how earth movements cause earthquakes and result in landforms, such as volcanoes and mountains. Concludes with a 10-question video quiz.