Introduces young readers to wheels and axles, explaining what they are, how they work, what they have been used for throughout history, and how they might be used in the future.
Presents an introduction to precipitation, explaining what it is, and includes information on the different types of precipitation, discussing storms, the water cycle, weather forecasting, acid rain, and other topics.
Presents an introduction to water pollution, in simple text with illustrations, explaining what it is, and how it effects the environment, and includes information on the different types of pollution, the water cycle, acid rain, and other topics.
Describes the science of rainbows, different kinds of rainbows, technologies used to study the sky, rainbow folklore and proverbs, and the rainbow discoveries of Ren? Descartes, and includes a hands-on exploration.
