hydrologic cycle

Explains the hydrologic cycle and why life depends on it, how the sun causes clouds, the three states of water, and how weather is changeable.

Examines the structure and history of Earth from the perspective of visitors from a distant galaxy, focusing on the water cycle and the processes of evaporation, condensation, and precipitation; features a visit to a desalination plant; and includes a demonstration of how an artesian well works.

Full-color, illustrated photographs introduce readers to the water cycle, discussing issues such as evaporation and condensation, water for drinking and for farming, polluted water, and rivers.

Introduces the water cycle, describing the three states of water and the ways in which it moves from one state to the other in the atmosphere and on the Earth's surface.

Questions and answers explain water, the water cycle, and such aspects of weather as rain, clouds, ice, and snow. Includes experiments and activities.

Simple text and photographs describe the stages of the water cycle.

Summarizes how Earth's water changes to vapor and rises into the sky where it turns into rain, and introduces related concepts such as the shape of raindrops and the presence of pollutants in rainfall.

Investigates science facts and concepts related to water, with photographs and cartoon illustrations, historical background, and mini quizzes.

Combines live action sequences with animations to describe the water cycle and examine how clouds are formed. Includes teacher's guide.