Atterberg Limits are a set of tests used to determine the plasticity and consistency of fine-grained soils. They help classify soil behavior by measuring the moisture content at which soil changes from a solid to a plastic state (the Liquid Limit) and from a plastic to a semi-solid state (the Plastic Limit). These limits are crucial for engineers and geologists as they assess soil stability and suitability for construction projects. Understanding Atterberg Limits aids in predicting how soil will behave under different moisture conditions, which is essential for effective land use and infrastructure development.