This resource is a 30 question Soil Horizons Google Form Self-Grading Quiz with a 3 page study guide and a study guide key. The quiz and study guide cover: 1.) Soil Composition & Characteristics Weathered Rock & Organic MatterPores, Gases, Nutrients (NPK)Soil Particles: Sand, Silt, & Clay2.) Soils Are Rich With LifeWorms, Plants, Bacteria, & More3.) The Soil Profile- Soil HorizonsO horizon, A Horizon, B Horizon, C Horizon, R Horizon (Bedrock)4.) Soil Formation & ErosionEcological Succession,