NSDL Science Refreshers 2 results returned Resources for Science > Earth Science > Earth Process and Materials > Soil > PropertiesThe Dirt on Soilhttp://school.discovery.com/schooladventures/soil/index.htmlThis page is from Discoveryschool.com. It has three sections. The first one, Down and Dirty, describes the various soil horizons. The second section, Field Guide, identifies some soil organisms and the third section, Soil Safari, is an animated tour of th Resource Type: Reference Material - Nonfiction Reference, Audio/Visual - Illustration, Audio/Visual - PhotographGrade Level: K, 1, 2, 3, 4, 5, 6 Porosity - porosity and permeability of soilhttp://www.seed.slb.com/qa2/FAQView.cfm?ID=426A concise explanation of soil porosity with links to educational activities. Resource Type: Reference Material - ArticleGrade Level: 4, 5, 6 |
