This comprehensive site explores a number of soil related topics. A glossary of soil terms, formation of soils, and classification of soils are just of a few of the topics found on this this.

After completing this lesson, students will understand the source and the process for the formation of soil, the different types of soil, and the components of soil.

This program uses a scenario with fictional detective characters to present plant growth to learners. While the unit focuses on the basic needs and parts of plants, the topics of plant classification and adaptations, soil formation and...

Learn about biological factors in the weathering and breakdown of rocks.

Examine why newly-formed lava has little plant life, explain why one generation of plant life allows subsequent plant life to grow in an area and determine why organic soil formation is a slow process.

A wonderfully detailed introduction to the topic of wind erosion and landforms. Contains many illustrations and maps which show the concepts that are presented in the text.

This site is a personal site from John W. Kimball, a Harvard Professor, that contains a brief definition of both topsoil and subsoil. A drawing supplements the text.

Everything you need to know about sedimentary rocks and the processes by which they are created, including weathering, soils, environments, and classification.