Physical Properties of Soil - Nancy Williams - 11/8/01. A soil profile comprises 5 major soil horizons (i.e., layers). Soil Texture (sand, silt, and clay) – USDA-NRCS K-12 Lessons A flow chart to identify soil texture (from the texture triangle) by feel, using a soil sample and water. Soil Glue (PDF; 2.9 MB) - Demonstrate how surface soil particles are held together by various organic substances (from the Soil Quality Team).. These horizons run parallel to the ground and serve up distinct characteristics that aid the layers above and below. Students will complete this by using a note taking device, exit slip, reading Dressing a Poinsettia - Diane Rundee 12/01. soil profile: a vertical view of the soil that displays the divided layers or horizons soil horizon: a layer of soil that forms from physical, chemical, and biological properties resulting from soil forming processes. Soil and Plants - Nancy Williams - 11/8/01. Each layer is distinguishable by certain characteristics. 5. Page 10. Erosion, deposition, and other processes might also affect the way a soil profile looks at a particular location. Painting With Soil. If you’re in a forest, a garden, or other natural system that’s not a dry desert, you’ll generally see organic material like leaves on the ground. 4. They are the O, A, B, C and R horizons. It is made of fresh to partially decomposed organic matter. reason soil horizons are different as you dig deeper is because of mixing of organic material in the upper horizons and weathering and leaching in the lower horizons. Turf Grass - Reynold Gardner - Junction City, OR 12/01. It naturally forms horizons, or layers of soil. Put a spoonful of candy-coated chocolates into the bottom of an individual cup; discuss what Parent Material is. When a vertical section of these many horizons is taken, its known as a soil profile. Even though it looks like a big bunch of brown stuff on the ground, soil is actually quite organized. Lesson 5. The color varies from brown to black. Grade Three: Curriculum Connections: Soils in the Environment. 6. Soil Water (PDF; 1.0 MB) - Demonstrate how water either enters the soil or runs off over the soil surface (from the Soil Quality Team).. Water Quality and Concerns- Travis Kersten - 11/24/01. A soil profile is the layers of soil on the top of the Earth that are called O, A, B, C and R horizons. You will need: This is future soil. Profiling soil isn’t the most colorful or exciting activity, but creating an edible representation of all the layers sure can be! Repeat this procedure with the pudding (Subsoil), followed by cookie Demonstrate making the soil horizons of your edible soil. Figure 1: A typical soil profile O Horizon: (1st layer) This is the top layer of soil. Introduction to the Soil Purpose Through this hands on lesson, students will understand the soil horizons and determine their properties. Lesson Plans. Soil Color Lesson and Activity - Developed by SSSA, this lesson and activity introduces the concept of soil colors and contains an activity on making Soil Crayons (from USDA). Place spoons with each of the soil horizon/layer ingredients. soil: "A living, dynamic system at the interface between air and rock. Soil Origin and Development - Nancy Williams - 11/8/01. SOIL PROFILE HORIZONS • O Horizon — organic layer of leaves, roots, and decaying material • A Horizon — Topsoil • B Horizon — Subsoil • C Horizon — Substratum • R Horizon — Bedrock or solid rock below the C Horizon Animal, Plant, and Soil Science Lesson Plan Library Unit C. Problem Area 6. Soil Crayons. The Color of Soil. Brent Niemeyer Series 2/8/02 They will also explain the difference between a soil profile, horizon, and layer. Lesson Plan – A Soil Profile. Naturally forms horizons, or 12/01 students will understand the soil horizons ( i.e., layers.... 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