An introduction to weather discussing such concepts as evaporation and condensation and the natural occurrence of rain, snow, thunderstorms, and hurricanes.
Discusses the various planets, moons, constellations, solar systems, and galaxies that make up the universe and some of the instruments used to explore it.
An introduction to various symbols, signals, and ways of sending messages that may be used to communicate information. Includes such things as alphabet, bells, facial expressions, flags, and smoke signals.