Olien, Rebecca

Explores the planets of the solar system; describing their landscapes, atmospheres, and temperatures. Includes glossary.

Discusses forces that change the earth's surface, including the movement of plates, volcanoes, and earthquakes, and the effects of those forces.

Describes the sources of freshwater on the earth and ways people can conserve water.

Presents information on how cities treat freshwater so that it is safe to drink, following it from underground wells and lakes to the faucet in the home. Includes glossary and photographs.

Presents an explanation of the stages of the water cycle, from evaporation, to condensation, through precipitation, and describes how the water cycle impacts the earth's water supply.

Presents information on water, describing its basic properties as a liquid, solid, and gas. Includes glossary and photographs.

Looks at the various sources of Earth's freshwater and saltwater, introduces the world's deepest lake, and includes an activity for learning about groundwater.

Learn why map keys are important and how to use them to interpret the data on different kinds of maps.

Introduces young readers to maps and globes.

Discover how lines can be used to pinpoint locations and give directions.