Explores the many aspects of sound, including how it travels, is received by the human ear, and can be recorded, and provides simple projects and experiments.
Discusses such aspects of the weather as air currents, temperature, world weather patterns, air pollution, and climate and agriculture. Includes activities and experiments.
Discusses what magnets are and how they work, describes the properties of magnets, and includes projects and activities, such as making a magnetic race track and a magnetic compass.