Physical models are physical representations or simulations of real-world systems or phenomena. These models are typically constructed using physical materials such as clay, wood, metal, or plastic and are used to study and analyze various aspects of the system being studied. Physical models are often used in engineering, architecture, physics, and other disciplines to help visualize and understand complex systems and processes. They can provide valuable insights and help researchers test hypotheses, make predictions, and design solutions to real-world problems.