The science behind

Explores the science behind plants, covering the anatomy of plants, plant life cycles, and the role of sunlight, air, and water in growth.

Discusses the role of science in explaining sound, light, and their properties and provides experiments to observe the phenomena that sound and light provide. Includes color illustrations, photos, word watches in text, and an index.

Explains the science that makes it possible for hot-air balloons, birds, hang gliders, airplanes, and other air- and spacecraft to remain aloft.