The perfect science fair idea books ? Spectacular Science Projects Janice VanCleave?s Volcanoes Why do volcanoes erupt? How do scientists predict volcanoes? Where are most volcanoes found? Janice VanCleave?s Volcanoes includes 20 fun and simple experiments that allow you to discover the answers to these and other fascinating questions about volcanoes, plus dozens of additional suggestions for developing your own science fair projects. Learn about predicting volcanic eruptions with a simple experiment using a magnet, a nail, and a piece of cardboard. Explore the fiery unseen interior of a volcano using a potato and a plastic soda bottle. Find out how lava forms into rocks using marbles in a box. All experiments use inexpensive household materials and involve a minimum of preparation and clean up. Children ages 8?12 Also available in the Spectacular Science Projects Series: Janice VanCleave?s Animals Janice VanCleave?s Earthquakes Janice VanCleave?s Electricity Janice VanCleave?s Gravity Janice VanCleave?s Machines Janice VanCleave?s Magnets Janice VanCleave?s Molecules Janice VanCleave?s Microscopes and Magnifying Lenses Janice VanCleave?s Weather Read Less