waterfall, Area where flowing river water drops abruptly and nearly vertically. A waterfall may also be termed a falls, or, when large volumes of water are involved, a cataract. Waterfalls of small height and less steepness or a series of small falls are called cascades. Still gentler stretches of river that exhibit turbulent flow and white water are called rapids.
waterfall Article
waterfall summary
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Niagara Falls Summary
Niagara Falls, waterfall on the Niagara River in northeastern North America, one of the continent’s most famous spectacles. The falls lie on the border between Ontario, Canada, and New York state, U.S. For many decades the falls were an attraction for honeymooners and for such stunts as walking
Iguaçu Falls Summary
Iguaçu Falls, series of cataracts on the Iguaçu River, 14 miles (23 km) above its confluence with the Alto (Upper) Paraná River, at the Argentina-Brazil border. The falls resemble an elongated horseshoe that extends for 1.7 miles (2.7 km)—nearly three times wider than Niagara Falls in North America