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Boats and Streams Solved Examples - Hitbullseye Important Formulas - Boats and Streams. 1. Downstream. In water, the direction along the stream is called downstream. 2. Upstream. In water, the direction against the stream is called upstream. 3. Let the speed of a boat in still water be u km/hr and the speed of the stream be v km/hr, then. We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners. Mar 17, �� Latest Boat News in Telugu: Read all the breaking news headlines, top stories, videos and photos about Boat at Oneindia Telugu.
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You can get a good score only if you get a good score in math section. Only practice and practice can give you a good score. The only thing you need to do is to do your math problems correctly and within time, and this can be achieved only by using shortcut tricks.

You may have that potential to do maths within time without using any shortcut tricks. For those we prepared this boats and streams shortcut tricks. We try our level best to put together all types of shortcut methods here. But if you see any tricks are missing from the list then please inform us.

Your little help will help others. Based on four things Problem of Boat and Stream are given in examination. Here we discuss about this four things which help you to solve the problem based on this topic. This is the basic theory of Boat and Stream which is applied in question to obtain answers here Boat and Stream Methods of example in different form of examples. Anything we learn in our school days was basics and that is well enough for passing our school exams.

Now the time has come to learn for our competitive exams. For this we need our basics but also we have to learn something new. In maths exam papers there are two or three question are given from this chapter. This type of problem are given in Quantitative Aptitude which is a very essential paper in banking exam. Under below given some more example for your better practice. Now we will discuss some basic ideas of Boats and Streams.

On the basis of these ideas we will learn trick and tips of shortcut boats and streams. If you think that how to solve boats and streams questions using boats and streams shortcut tricks , then further studies will help you to do so.

Downstream In water, the direction of a boat along with the stream is Downstream. Upstream The direction of a boat against the stream is Upstream. We provide few tricks on Boats and Streams. Please visit this page to get updates on more Math Shortcut Tricks. You can also like our facebook page to get updates. If you have any question regarding this topic then please do comment on below section.

You can also send us message on facebook. Boats and Streams Shortcut Tricks Shortcut tricks on boats and streams are one of the most important topics in exams.

We provide examples on Boats and Streams shortcut tricks Advertisement. Alluvial rivers have channels and floodplains that are self-formed in unconsolidated or weakly consolidated sediments. They erode their banks and deposit material on bars and their floodplains. Bedrock rivers form when the river downcuts through the modern sediments and into the underlying bedrock. This occurs in regions that have experienced some kind of uplift thereby steepening river gradients or in which a particular hard lithology causes a river to have a steepened reach that has not been covered in modern alluvium.

Bedrock rivers very often contain alluvium on their beds; this material is important in eroding and sculpting the channel. Rivers that go through patches of bedrock and patches of deep alluvial cover are classified as mixed bedrock-alluvial. Alluvial rivers can be further classified by their channel pattern as meandering, braided, wandering, anastomose, or straight. The morphology of an alluvial river reach is controlled by a combination of sediment supply, substrate composition, discharge, vegetation, and bed aggradation.

At the start of the 20th century William Morris Davis devised the " cycle of erosion " method of classifying rivers based on their "age". Although Davis's system is still found in many books today, after the s and s it became increasingly criticized and rejected by geomorphologists. His scheme did not produce testable hypotheses and was therefore deemed non-scientific. The ways in which a river's characteristics vary between its upper and lower course are summarized by the Bradshaw model.

Power-law relationships between channel slope, depth, and width are given as a function of discharge by " river regime ". There are several systems of classification based on biotic conditions typically assigning classes from the most oligotrophic or unpolluted through to the most eutrophic or polluted. The International Scale of River Difficulty is used to rate the challenges of navigation�particularly those with rapids. Class I is the easiest and Class VI is the hardest.

The Strahler Stream Order ranks rivers based on the connectivity and hierarchy of contributing tributaries. Headwaters are first order while the Amazon River is twelfth order.

In certain languages, distinctions are made among rivers based on their stream order. Since many fleuves are large and prominent, receiving many tributaries, the word is sometimes used to refer to certain large rivers that flow into other fleuves ; however, even small streams that run to the sea are called fleuve e. Rivers have been a source of food since pre-history.

Rivers help to determine the urban form of cities and neighbourhoods and their corridors often present opportunities for urban renewal through the development of foreshoreways such as river walks. Rivers also provide an easy means of disposing of waste water and, in much of the less developed world, other wastes.

Rivers have been used for navigation for thousands of years. The earliest evidence of navigation is found in the Indus Valley Civilization , which existed in northwestern India around BC. Since river boats are often not regulated, they contribute a large amount to global greenhouse gas emissions , and to local cancer due to inhaling of particulates emitted by the transports. Rivers have been important in determining political boundaries and defending countries.

For example, the Danube was a long-standing border of the Roman Empire , and today it forms most of the border between Bulgaria and Romania. The Mississippi in North America and the Rhine in Europe are major east-west boundaries in those continents.

The Orange and Limpopo Rivers in southern Africa form the boundaries between provinces and countries along their routes. In some heavily forested regions such as Scandinavia and Canada , lumberjacks use the river to float felled trees downstream to lumber camps for further processing, saving much effort and cost by transporting the huge heavy logs by natural means.

Fast flowing rivers and waterfalls are widely used as sources of energy, via watermills and hydroelectric plants. Evidence of watermills shows them in use for many hundreds of years, for instance in Orkney at Dounby Click Mill. Prior to the invention of steam power, watermills for grinding cereals and for processing wool and other textiles were common across Europe. In the s the first machines to generate power from river water were established at places such as Cragside in Northumberland and in recent decades there has been a significant increase in the development of large scale power generation from water, especially in wet mountainous regions such as Norway.

The coarse sediments, gravel , and sand , generated and moved by rivers are extensively used in construction. In parts of the world this can generate extensive new lake habitats as gravel pits re-fill with water. In other circumstances it can destabilise the river bed and the course of the river and cause severe damage to spawning fish populations which rely on stable gravel formations for egg laying. In upland rivers, rapids with whitewater or even waterfalls occur.

Rapids are often used for recreation, such as whitewater kayaking. The organisms in the riparian zone respond to changes in river channel location and patterns of flow. The ecosystem of rivers is generally described by the river continuum concept , which has some additions and refinements to allow for dams and waterfalls and temporary extensive flooding. The concept describes the river as a system in which the physical parameters, the availability of food particles and the composition of the ecosystem are continuously changing along its length.

The food energy that remains from the upstream part is used downstream. The general pattern is that the first order streams contain particulate matter decaying leaves from the surrounding forests which is processed there by shredders like Plecoptera larvae. The products of these shredders are used by collectors, such as Hydropsychidae , and further downstream algae that create the primary production become the main food source of the organisms.

All changes are gradual and the distribution of each species can be described as a normal curve , with the highest density where the conditions are optimal.

In rivers succession is virtually absent and the composition of the ecosystem stays fixed. The chemistry of rivers is complex and depends on inputs from the atmosphere, the geology through which it travels and the inputs from man's activities. The chemical composition of the water has a large impact on the ecology of that water for both plants and animals and it also affects the uses that may be made of the river water.

Understanding and characterising river water chemistry requires a well designed and managed sampling and analysis. Brackish waster occurs in most rivers where they meet the sea. The extent of brackish water may extend a significant distance upstream, especially in areas with high tidal ranges. Flooding is a natural part of a river's cycle. The majority of the erosion of river channels and the erosion and deposition on the associated floodplains occur during the flood stage.

In many developed areas, human activity has changed the form of river channels, altering magnitudes and frequencies of flooding. Some examples of this are the building of levees , the straightening of channels, and the draining of natural wetlands.

In many cases Boats And Streams Problems In Telugu Email human activities in rivers and floodplains have dramatically increased the risk of flooding. Straightening rivers allows water to flow more rapidly downstream, increasing the risk of flooding places further downstream. Building on flood plains removes flood storage, which again exacerbates downstream flooding. The building of levees only protects the area behind the levees and not those further downstream. Levees and flood-banks can also increase flooding upstream because of the back-water pressure as the river flow is impeded by the narrow channel banks.

Detention basins finally also reduce the risk of flooding significantly by being able to take up some of the flood water.

Studying the flows of rivers is one aspect of hydrology. Rivers flow downhill with their power derived from gravity. The direction can involve all directions of the compass and can be a complex meandering path.

Rivers flowing downhill, from river source to river mouth, do not necessarily take the shortest path. For alluvial streams, straight and braided rivers have very low sinuosity and flow directly down hill, while meandering rivers flow from side to side across a valley. Bedrock rivers typically flow in either a fractal pattern, or a pattern that is determined by weaknesses in the bedrock, such as faults , fractures , or more erodible layers.

Volumetric flow rate , also known as discharge, volume flow rate, and rate of water flow, is the volume of water which passes through a given cross-section of the river channel per unit time. Volumetric flow rate can be thought of as the mean velocity of the flow through a given cross-section, times that cross-sectional area.

Mean velocity can be approximated through the use of the Law of the Wall. In general, velocity increases with the depth or hydraulic radius and slope of the river channel, while the cross-sectional area scales with the depth and the width: the double-counting of depth shows the importance of this variable in determining the discharge through the channel. In its youthful stage the river causes erosion in the water-course, deepening the valley. Hydraulic action loosens and dislodges the rock which further erodes the banks and the river bed.

Over time, this deepens the river bed and creates steeper sides which are then weathered. The steepened nature of the banks causes the sides of the valley to move downslope causing the valley to become V-shaped. Waterfalls also form in the youthful river valley where a band of hard rock overlays a layer of soft rock. Differential erosion occurs as the river erodes the soft rock more readily than the hard rock, this leaves the hard rock more elevated and stands out from the river below.

A plunge pool forms at the bottom and deepens as a result of hydraulic action and abrasion. Sediment yield is the total quantity of particulate matter suspended or bedload reaching the outlet of a drainage basin over a fixed time frame.

Yield is usually expressed as kilograms per square kilometre per year. The theoretical concept of the 'sediment delivery ratio' ratio between yield and total amount of sediment eroded captures the fact that not all of the sediment is eroded within a certain catchment that reaches out to the outlet due to, for example, deposition on floodplains.

Such storage opportunities are typically increased in catchments of larger size, thus leading to a lower yield and sediment delivery ratio. Rivers are often managed or controlled to make them more useful or less disruptive to human activity.

River management is a continuous activity as rivers tend to 'undo' the modifications made by people. Dredged channels silt up, sluice mechanisms deteriorate with age, levees and dams may suffer seepage or catastrophic failure. The benefits sought through managing rivers may often be offset by the social and economic costs of mitigating the bad effects of such management. As an example, in parts of the developed world, rivers have been confined within channels to free up flat flood-plain land for development.

Floods can inundate such development at high financial cost and often with loss of life. Rivers are increasingly managed for habitat conservation , as they are critical for many aquatic and riparian plants, resident and migratory fishes , waterfowl , birds of prey , migrating birds , and many mammals. From Wikipedia, the free encyclopedia. Natural flowing watercourse. For other uses, see River disambiguation. For other uses, see Rivers disambiguation. For riverine warfare, see Brown-water navy.

Main article: Intermittent river. Main article: River ecosystem. Main article: River chemistry.

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