Types of Soil and Layers of Soil

Discover the layers and types of soil, from humus to bedrock. Learn what makes soil fertile and identify different soil textures!

Match the Soil Horizon with its correct Meaning. O Horizon Composed of Organic Material (Humus). A Horizon Topsoil layer where most plants roots live. B Horizon Subsoil layer made primarily of Red Clay due to the presence of Iron. C Horizon Weathered Bedrock layer that's known as the Parent Rock. R Horizon Bedrock. What is Humus? Great with Pita Chips Organic Material Sediments Parent Rock Inorganic Material Why is Humus so important for Soil? It improves Water Filtration. It breaks down Oganic Pollutants. It is rich in nutrients, which is important for fertility. It converts Nitrogen into Nitrates, which are absorbed by Plants. What does the texture of "Sandy" Soil feel like? Sticky Smooth Gritty Which of the following will you NOT find living in Soil? Baby cows Earthworms Bacteria Mites Match each Soil types to its Correct Description. Silt Brownish Color with a Soft, Floury Texture. Clay Smallest Particles with a Red Color, sticky when wet and Fine Texture. Sand Largest Particles with a Yellowish Color, and a Gritty Texture. Loam A combination of Sand, Silt, and Clay that is best for Plant Growth.