What is a pool in geography?
Pools: An area of the stream characterized by deep depths and slow current. Pools are typically created by the vertical force of water falling down over logs or boulders. The movement of the water carves a deeper indentation in the stream bed. Pools are important because they can provide depth and still water.
What is a riffle in water?
Riffles are the shallower, faster moving sections of a stream. Look for areas with a fast current where rocks break the water surface. That’s a riffle. Riffles are important to fish habitat. As water rushes over the rocks it adds oxygen to the water.
What are pools?
Definition of pool (Entry 1 of 4) 1a(1) : a small and rather deep body of usually fresh water. (2) : a quiet place in a stream. (3) : a body of water forming above a dam.
How meanders are formed pools and riffles?
In a straight river channel pools and riffles will develop as water twists and turns around obstructions such as large boulders. This results in areas of slower and faster water movement. Pools are areas of deep water and greater erosion (energy build-up due to less friction).
What is riffle in geography?
Riffles are areas of shallow water created by deposition of coarse sediment. Once pools and riffles have developed, the river flows from side-to-side in a winding course.
What riffle means?
1 : to form, flow over, or move in riffles. 2 : to flip cursorily : thumb riffle through the catalog. transitive verb. 1 : to ruffle slightly : ripple. 2a : to leaf through hastily specifically : to leaf by sliding a thumb along the edge of the leaves riffle a stack of paper.
What are pools in history?
Ancient Pools More man-made pools surfaced throughout the ancient world. In Rome and Greece, swimming was part of the education of elementary age boys and the Romans built the first swimming pools (separate from bathing pools). The first heated swimming pool was built by Gaius Maecenas of Rome in the first century BC.
How do pools work?
Water is drawn from your pool by the powerful suction created from the pump. The pump draws the water through the skimmers and drains, removing large debris during the journey. When the pump’s impeller is reached, pressure forces water through the filer, catching any debris not caught by skimmer baskets.
What is the synonym of riffle?
In this page you can discover 28 synonyms, antonyms, idiomatic expressions, and related words for riffle, like: dribble, dip into, jumble, scramble, shuffle, Also used with through: browse, leaf, run-through, scan, skim and thumb.
What does rifled through mean?
Definition of rifle through : to search through something quickly and carelessly often in order to take or steal something He rifled through the papers on his desk.
Who created pools?
The first heated swimming pool was built by Gaius Maecenas of Rome in the 1st century BC. Gaius Maecenas was a rich Roman lord and considered one of the first patrons of arts. Ancient Sinhalese built pairs of pools called “Kuttam Pokuna” in the kingdom of Anuradhapura, Sri Lanka in the 4th century BC.
What is called meander?
Rivers flowing over gently sloping ground begin to curve back and forth across the landscape. These are called meandering rivers. Meandering rivers erode sediment. from the outer curve of each meander bend and deposit it on an inner curve further down stream.
What is meanders in geography?
As the river erodes laterally, to the right side then the left side, it forms large bends, and then horseshoe-like loops called meanders . The formation of meanders is due to both deposition and erosion and meanders gradually migrate downstream.
What is meant by rifled?
1 : the act or process of making spiral grooves. 2 : a system of spiral grooves in the surface of the bore of a gun causing a projectile when fired to rotate about its longer axis.
What is the difference between rifle and riffle?
Those grooves are also called rifles. Since a rifle is a gun and someone might use a gun in a robbery, your Quick and Dirty Tip is to remember that to rifle is to ransack a place while looking for something to steal, and “riffle” is the nicer word that means to flip through or shuffle things.
Where does pools come from?
In Rome and Greece, swimming was part of the education of elementary age boys and the Romans built the first swimming pools (separate from bathing pools). The first heated swimming pool was built by Gaius Maecenas of Rome in the first century BC.
What is a meander answer?
A meander is one of a series of regular sinuous curves in the channel of a river or other watercourse. It is produced as a watercourse erodes the sediments of an outer, concave bank (cut bank) and deposits sediments on an inner, convex bank which is typically a point bar.
Why are meanders important?
Those bends and turns manage the energy of water, as it moves through and over channel terrain, by increasing resistance and reducing channel gradient. The geometry of the meander minimizes the amount of work, or energy expended, while using that same energy uniformly.
Why is rifling important?
Rifling helps impart a spinning motion to a bullet when it’s fired. A spinning bullet is much more stable in its trajectory, and is therefore more accurate than a bullet that doesn’t spin. This is exactly why is is better to throw a football in a spiral.
What is rifling and what is its purpose?
In firearms, rifling is machining helical grooves into the internal (bore) surface of a gun’s barrel for the purpose of exerting torque and thus imparting a spin to a projectile around its longitudinal axis during shooting to stabilize the projectile longitudinally by conservation of angular momentum, improving its …