Name five landforms
A landform is a natural feature of the surface. Easy five: mountains, plains, plateaus, valleys, hills. Canyons, dunes, volcanoes, islands, basins, and deltas also count.
Topography vs. relief
Topography is the shape of an area — the overall lay of the land. Relief is the elevation of an area, specifically the difference between the highest and lowest points. Mountains: high relief. Plains: low relief.
Two major U.S. ranges
The two major mountain ranges in the United States are the Rocky Mountains (west) and the Appalachian Mountains (east). A continent is a large landmass; North America is ours.
Iowa's landform
The major landform in Iowa is plains — part of the Interior Plains. Glaciers left a wide, gently rolling landscape. That is low-relief topography: not flat like a table, but not mountainous either.