A flat graphical representation of locations on Earth is called a map. Maps are used to visualize and understand the spatial distribution of features and phenomena on the Earth's surface. They provide a simplified representation of the real world, using symbols, colors, and lines to represent different geographical features such as land, water bodies, roads, cities, and landmarks. Maps can vary in scale, scope, and purpose, and can be used for various applications, including navigation, planning, research, and education.