which one of the following is the correct definition of stream gradient?
155483
Stream gradient is the grade measured by the ratio of drop in elevation of a stream per unit horizontal distance, usually expressed as meters per kilometer or feet per mile.
792084
Slope, sometimes referred to as gradient in mathematics, is a number that measures the steepness and direction of a line, or a section of a line connecting two points, and is usually denoted by m. Generally, a line's steepness is measured by the absolute value of its slope, m.
590927
What is the relationship between average stream velocity, stream roughness and stream gradient? As average stream velocity increases, roughness and gradient decrease. As average stream velocity increases, roughness increases and gradient decreases.
571385
Flow is said to be uniform, when the velocity of flow does not change either in magnitude or in direction at any point in a flowing fluid, for a given time. For example, the flow of liquids under pressure through long pipelines with a constant diameter is called uniform flow. 4. Unsteady non-uniform flow.
1386023
Negative hydrostatic pressure gradient. When the difference in pressure exerted by a fluid at a given point due to gravity is towards gravity. When the difference in pressure exerted by a fluid at a given point due to gravity is against gravity. In plant cells, the turgor pressure is the positive hydrostatic pressure.
744034
Speed-time graphs The gradient of the line of the speed-time graph is the acceleration of the particle (for straight lines acceleration is constant). ... A straight line on a distance-time graph represents that a particle has constant speed.
1453128
The gradient of a velocity time graph represents acceleration, which is the rate of change of velocity. If the velocity-time graph is curved, the acceleration can be found by calculating the gradient of a tangent to the curve.
159803
Rapids are stream sections with extremely strong currents, numerous obstacles, and steps in their streambeds. A waterfall is a vertical drop in a streambed. Both are sites of vigorous erosion . Rapids often form where resistant bedrock confines a stream to a narrow channel, and forces an increase in water velocity.
1273038
Different structures are referred to as banks in different fields of geography, as follows. In limnology (the study of inland waters), a stream bank or river bank is the terrain alongside the bed of a river, creek, or stream. The bank consists of the sides of the channel, between which the flow is confined.
309401
Diffusion vs. "Bulk flow" is the movement/flow of an entire body due to a pressure gradient (for example, water coming out of a tap). "Diffusion" is the gradual movement/dispersion of concentration within a body, due to a concentration gradient, with no net movement of matter.
369863
Our experiments will examine three variables that affect water flow in a stream and test for their effect on erosion: slope (gradient) of the streambed, total amount of water flowing in a streambed (discharge), and pulses (spikes) in water.
1251674
A stream pool, in hydrology, is a stretch of a river or stream in which the water depth is above average and the water velocity is below average.
909992
A waterfall is a sudden fall of water that occurs where there are rapid changes in gradient in the river's course. GORGES; A narrow valley between hills or mountains, typically with steep rocky walls and a stream running through it.
667998
The difference in the concentration of a substance across a space is called a concentration (equilibrium/gradient). ... (equilibrium/diffusion) is the simplest type of passive transport. diffusion. the diffusion of water through a selectively permeable membrane is called (osmosis/diffusion).
472467
Physical Significance of Gradient. The gradient is a vector function which operates on a scalar function to produce a vector whose scale is the maximum rate of change of the function at the point of the gradient and which is pointed in the direction of that utmost rate of change. The symbol for the gradient is ∇.
738924
In closed conduits flowing under pressure, the hydraulic grade line is the level to which water would rise in a vertical tube (open to atmospheric pressure) at any point along the pipe. HGL is determined by subtracting the velocity head (V2/2g) from the energy gradient (or energy grade line).
62082
Simple concentration gradients are differential concentrations of a substance across a space or a membrane, but in living systems, gradients are more complex. ... The combined gradient of concentration and electrical charge that affects an ion is called its electrochemical gradient.