Landforms that result from running water include canyons, deltas, and alluvial fans. The slope of the land over which a river flows has an effect on the processes of erosion and deposition. During flood, the rate of erosion and deposition increases. Topographic maps show contour lines, which represent points of equal elevation. Topo maps use symbols and color to represent landforms.
Cartographers use aerial photographs as one tool in constructing topographic mps.
Landform maps can be generated from aerial photographs. Students understand the processes of scientific investigation and design, conduct, communicate about, and evaluate such investigations. Students know and understand common properties, forms, and changes in matter and energy. Students know and understand the processes and interactions of earth's systems and the structure and the dynamics of earth and other objects in space. Students know and understand interrelationships among science, technology, and human activity and how they can affect the world.