Why does it Rain? Waht causes thunder and lightning? How does a cloud form? This book features 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.