What do you think the origin of the broad, flat surface is above the coastal cliffs shown below?9/22/2023 ![]() Once the wind stops blowing, and/or the waves leave the area of generation, they quickly transform into swell - lower, longer, faster and uniform in direction. The Mariana Trench, the deepest landform on Earth, is in the South Pacific.When waves are being generated they are called a sea and consist of short, steep, high, slower waves, which tend to topple over and break, and have a broad spectrum of direction. Landforms can exist under water in the form of mountain ranges and basins under the sea. It is part of the Himalaya range that runs across several countries in Asia. ![]() It measures 8,850 meters (29,035 feet) above sea level. The highest landform on Earth is a mountain: Mount Everest in Nepal. The Grand Canyon is 446 kilometers (277 miles) long. It took 6 million years, in fact, for the Colorado River to carve out the Grand Canyon in the U.S. Both processes happen over a long period of time, sometimes millions of years. Erosion by water and wind can wear down land and create landforms like valleys and canyons. Tectonic plate movement under Earth can create landforms by pushing up mountains and hills. Minor landforms include buttes, canyons, valleys, and basins. Mountains, hills, plateaus, and plains are the four major types of landforms. A landform is a feature on Earth's surface that is part of the terrain.
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