The perfect science fair idea books . Spectacular Science Projects Janice VanCleave's Weather Why does it rain? What causes thunder and lightning? How does a cloud form? Janice VanCleave's Weather includes 20 fun and simple experiments that allow you to discover the answers to these and other fascinating questions about weather, plus dozens of additional suggestions for developing your own science fair projects. Learn what causes lightning with a simple experiment using a roll of tape in a darkened room. Make a barometer from a soda bottle, straws, modeling clay, and colored water. Use a shoe box, plastic wrap, and some soil to understand the greenhouse effect. All experiments use inexpensive household materials and involve a minimum of preparation and cleanup. 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 Volcanoes Kids.