Rapid

For other meanings, see Rapid (disambiguation).

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A rapid is a section of a river where it loses elevation over a relatively short distance (that is, the stream gradient is locally steepened), causing an increase in water flow and (usually) turbulence. A rapid is a hydrological feature between a run and a cascade. A rapid is recognized by the river becoming shallower and having rocks exposed above the flow surface. As flowing water splashes over and around the rocks, air bubbles become mixed in with it and the water takes on a white colour, forming what is called "whitewater". Rapids occur where the bed material is highly resistant to the erosive power of the stream in comparison with the bed downstream of the rapids. Very young streams flowing across solid rock may be rapids for much of their length.

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River: :For the Second World War frigate class, see River class frigate. For the state of Nigeria, see Rivers State....

Stream: A stream is a body of water with a detectable current, confined within a bed and banks. Stream is also an umbrella term used in the scientific community for all flowing natural waters....

Gradient: In vector calculus, the gradient of a scalar field is a...

Rapid related Images and Photos (experimental)

The Rapid	The Rapid	Rapid Response Board Game	Hot Wheels Rapid Transit Case
Dinosaur Park Rapid City South Dakota	NERF Raider Rapid Fire CS-35 Blaster	Rapid River in Rainforest Tarkine Tasmania Australia	Political Map of Rapid City SD
Brontosaurus Dinosaur Park Rapid City South Dakota	Nerf N-Strike Raider Rapid Fire CS-35 Blaster	Hot wheels Basic Car Rapid Transit Vehicles Case	Nerf N-Strike Raider Rapid Fire CS-35 Gear Up Dart Blaster