Why do planets spin? How hot is the sun? What keeps the moon in orbit around the earth? What are Saturn's rings made of? What's a black hole in space? Now you can discover the answers to these and other fascinating questions about basic astronomy. In this book, you'll learn about the constellations using a shoe box planetarium. You'll chart the movement of the stars with nothing but a string, a marker, and a nail. And you'll use a toy magnet to simulate the Earth's protective force field. Each of the 101 experiments is broken down into its purpose, a list of materials, step-by-strp instructions, expected results, and an easy to understand explanation. Evey activity has been pre-tested and can be performed safely and inexpensively in the classroom or at home. By Janice VanCleave. |