Explains the main elements of weather, including what causes temperature changes, the composition of the atmosphere, seasonal changes, and the effects of ocean currents and altitude on climate. Includes simple experiments.
Discusses Earth's atmosphere and some of the problems that humans have helped caused, such as acid rain and the greenhouse effect. Includes related projects.
Discusses plate tectonics and the causes of earthquakes and volcanoes, the features and formation of other geographical areas, and possible future changes in the earth's surface. Features projects throughout.