Audience: Students; Grades: 4-8; Subject: Science. (2003) This program explains the causes behind earthquakes and volcanoes, revealing the devastating impact of these natural disasters. Descriptions of actual volcanic eruptions and earthquakes are combined with graphics to reveal how these dynamic forces occur. Also examines are how scientists can predict and measure earthquakes, identify types of volcanoes, and determine the nature of volcanic eruptions. Concludes with a 10-question video quiz.