How Much Soil Is There? Activity Source: Adapted with permission by the Soil Science Society of America from Oklahoma Ag in the Classroom. Background All living things depend on soil to live. What are some of our important natural resources? Your answers might include materials such as oil, water, coal, trees, animals, and gold. All of those areimportant natural resources, but we often forget to mention one of our most important natural [Read More]

Investigating Soil Activity Source: “Soils Sustain Life,” American Geosciences Institute, 2005. Adapted with permission. Materials Piece of heavy duty PVC pipe about one inch in diameter and 10 inches long Piece of wood doweling that will fit inside the PVC pipe Hammer Wood block Leather garden glove Hand lens Non-toxic marker Large sheet of white posterboard Six clear plastic sandwich bags Plastic knife Tools for separating soil, such as tweezers, tongue depressor, drinking straw Paper towels (for clean up) Procedure Chose a spot to investigate the soil on publicly owned land. [Read More]

It’s About Time Activity Source: National Park Service. Adapted with permission. Geologic time can be difficult for people to understand. Our own lives are so short when we compare them to the age of the Earth, that the hundreds of millions of years of geologic time are almost too much to grasp. But for us to understand Earth activities today, we must have at least some basic understanding of geologic time. [Read More]

Land and People: Finding a Balance Activity Source: Adapted with permission by U.S. Geological Survey This environmental study project allows a group of students to consider real environmental dilemmas concerning water use and provide solutions to these dilemmas. The student packet (see Materials below) gives students most of the information they’ll need to answer the Focus Question, information such as maps, data, background, a reading about the region, and a description of the “Interested Parties,” or the various interest groups that have a stake in the outcome of the Focus Question. [Read More]

Liquefaction Activity Source: Adapted with permission by Soil Science Society of America. When it comes to slipping, sliding, and stability in soils, the key word is “liquefaction.” During an event like an earthquake, liquefaction is the process by which saturated soil behaves like a liquid. This can be problematic, as a liquid soil loses structure and can cause buildings to sink, foundations to crack, and soil to slide down slopes all at once. [Read More]

Maintaining Soil Moisture Activity Source: American Geophysical Union. Adapted with permission. Soil is a vital component of almost every ecosystem, and its health often determines the viability of the whole ecosystem. If a soil cannot support the living organisms within it – such as insects, bacteria, fungi, and plant roots – then it is likely that the entire ecosystem will suffer. The same is true on farms. The success of crops is dependent on the health of the soil. [Read More]

Map-Making Basics Activity Source: U.S. Geological Survey, 2006. Adapted with permission. Background Maps are two-dimensional ways of representing information about the natural and built world from a “top-down” perspective. You are probably familiar with road maps that show where roads go and which roads intersect with others and where. You also may have seen weather maps, which show weather patterns across a specific geographic area, or political maps, which show where borders are for countries and areas within those countries. [Read More]

Mapping a Refuge Activity Source: National Energy Education Development Project. Provided by the U.S. Fish and Wildlife Service. Adapted with permission. The National Wildlife Refuge System, managed by the U.S. Fish and Wildlife Service, is the world’s premier system of public lands and waters set aside to conserve America’s fish, wildlife, and plants. Why not visit a national wildlife refuge (www.fws.gov/refuges) in or near your community? A refuge is a place where you can record observations of seasonal changes to plants, trees, and wildlife. [Read More]

Mapping Your Soil Activity Source: Soil Science Society of America. Adapted with permission. The key properties of soil (physical, biological, and chemical) determine recreation, crop production, range, water/erosion conservation, forestry, and engineering uses of the soil. Soil surveys help us understand how soils differ and how they behave under various land management systems. The heart of a soil survey is the soil map showing the spatial distribution and variability of soils on the landscape. [Read More]

Measuring Permeabilities of Soil, Sand, and Gravel Activity Source: Adapted with permission from an activity by Robert D. Whisonant, Physical Science Department, Radford University, Radford, VA 24142. SEPM (Society for Sedimentary Geology), 2006. Background This investigation will help you to learn that different geologic materials have different characteristics. Why is this important? When a road or building is constructed, the underlying substance could have an effect on the structure’s stability. Different soils, for instance, can pose different problems, based on climate, topography, and amount of rainfall in the area. [Read More]