内容简介：
Great Science Experiments for Middle School Readers More than just activity books, the titles in this series thoroughly explain the concepts behind the experiments. The hands-on projects use readily available materials and are suitable for investigations at home or at school. Focusing on topics in physical science, earth and space science, and life science, these lively and attractive books are an excellent way to meet the National Science Content Standards. Almost three-fourths of the earth's surface is covered by oceans. This book uses oceanography experiments to explain core scientific principles. Topics include buoyancy, density, pressure, waves, tides, and the water cycle.