Plains are, nearly level stretches of land. They have no great changes in elevation.

1. Plains Mountains Hills Canyon Plains are, nearly level stretches of land. They have no great changes in elevation. They are generally lower than the land around them. Found along the coast and inland. A coastal plains are found near a seacoast. Heights of mountains are generally given as heights above sea level. Highest peak on land is Mount Everest. There are mountains under the surface of the sea. Himalayas are the highest mountains. In the world Hills are elevations of the earth’s surface that have distinct summits, but are lower than mountains. Hills may be created by faults. Hills are also formed by deep erosion of areas that were raised by disturbances in the earth’s crust. Canyons are deep gorges or holes, with cliff sides. Mostly found in dry areas when they deepen and weathering widens the sides of the canyon. Erosion is the process that formed canyons on Earth. The Grand Canyon is the largest canyon in the U.S.