Difference between revisions of "AY Honors/Waterfalls/Answer Key"
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Some waterfalls form in [[mountain|mountain]] environments where erosion is rapid and stream courses may be subject to sudden and catastrophic change. In such cases, the waterfall may not be the end product of many years of water action over a region, but rather the result of relatively sudden geological processes such as [[thrust fault]]s or [[volcano|volcanic action]]. | Some waterfalls form in [[mountain|mountain]] environments where erosion is rapid and stream courses may be subject to sudden and catastrophic change. In such cases, the waterfall may not be the end product of many years of water action over a region, but rather the result of relatively sudden geological processes such as [[thrust fault]]s or [[volcano|volcanic action]]. | ||
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==Types of waterfalls== | ==Types of waterfalls== | ||
Revision as of 22:13, 8 December 2005
A waterfall is usually a geological formation resulting from water, often in the form of a stream flowing over an erosion-resistant rock formation that forms a sudden break in elevation. Waterfalls may also be artificial, and they are sometimes used for garden and landscape ornament.
Some waterfalls form in mountain environments where erosion is rapid and stream courses may be subject to sudden and catastrophic change. In such cases, the waterfall may not be the end product of many years of water action over a region, but rather the result of relatively sudden geological processes such as thrust faults or volcanic action.
IT'S NOAH!
Types of waterfalls
- Block
- Water descends from a relatively wide stream or river.
- Cascade
- Water descends a series of rock steps.
- Cataract
- A large waterfall.
- Fan
- Water spreads horizontally as it descends while remaining in contact with bedrock.
- Horsetail
- Descending water maintains some contact with bedrock
- Plunge
- Water descends vertically, losing contact with the bedrock surface
- Punchbowl
- Water descends in a constricted form, then spreads out in a wider pool.
- Segmented
- Distinctly separate flows of water form as it descends.
- Tiered
- Water drops in a series of distinct steps or falls.
Examples of large waterfalls
- Angel Falls, the world's highest at 979 m (3230 ft), in Venezuela
- Victoria Falls, the world's largest, on the Zambezi River, on the border between Zambia and Zimbabwe
- Boyoma Falls, with the world's highest volume, 17,000 m³/s (600,000 ft³/s), on the Congo River, Democratic Republic of the Congo
- Yosemite Falls, the tallest in North America, located in Yosemite National Park, United States
- Niagara Falls, most voluminous in North America, on the border between the United States and Canada
- Rhine Falls, Europe's largest, located in Switzerland
- Iguazu Falls, a tall and extremely wide fall located in South America on the Argentina/Brazil border
- Jog Falls, India's highest and second highest in Asia, located in Karnataka state, India
- Jurong Falls in Singapore is said to be the tallest man-made waterfall in the world
Gallery
- Base of Tower Fall with rainbow-750px.JPG
Tower Fall in Yellowstone National Park, United States
Angel Falls, Venezeuela
Wailua Falls in Hawaii, United States
Dettifoss in Iceland
Man made waterfall at the Australian National Botanic Gardens in Canberra, Australia
External links
da:Vandfald de:Wasserfall eo:Akvofalo es:Cascada et:Juga fr:Chute d'eau he:מפל מים it:Cascata ja:滝 nl:Waterval no:Foss nn:Foss pl:Wodospad pt:Cachoeira (cascata) sl:Slap sv:vattenfall
