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Parts of a River

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Kate Lusco

on 5 April 2013

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Transcript of Parts of a River

Kate Lusco
Block 3 Parts of a River Lab Group
Independent Variable
Dependent Variable
Flood Plain
Load Features Watershed Braided Stream Bed Deposition Deposition is the deposit of sand at the bottom of a river. Deposition also occurs on the inside of a river's meander. Flood Plain Erosion Rapids A rapid is fast flowing water in a river or stream. They can be seen against rocks and other particles when the make ripples. Suspension Suspension in a river are the fine sand particles floating that make the water look muddy. Load In this experiment, the blue rocks and sand particles are the load carried down the flow of the river. Stream Piracy Divide A divide is an elevated area that separates watersheds. On Earth, mountains chains are often examples of divides, like the Appalachian and Rocky Mountain ranges. Erosion is the build up of sand around the outside of a meander. In the experiment, the water was eroding the sand to create and erosional area. This area is often steeper than a depositional area. Stream Piracy is when a river erodes through a divide and connects itself to another river. When this occurs, the river grows larger and expands the watershed. The flood plain is the land around a river that it runs through. In this experiment, the flood plain was all the sand around the river. before after A watershed is all of the land that drains into a river. A watershed is also known as a drainage basin. Braided stream beds are small and shallow streams that resemble strands of hair in a braid. They form in groups on the outskirts of a river Source Lab Group! Independent Variable DependentVariable Constants Channel Materials Channel
Braided Stream Bed
Stream Piracy
Stream Gradient
Erosion The independent variable of this experiment was the gradient of the stream. For the first stream we made, the stream gradient was lower than the second river's gradient. first stream gradient second stream gradient Stream Gradient The dependent variable of this experiment were the depositional and erosional river features. These include channels and divides. The constants in this experiment were the water flow rate and the sand. Throughout the experiment, we did not change the rate of the water flow or the type of sand. In this experiment, we used a rectangular container to form our rivers, water to flow our rivers, sand for our river to flow on, a phone to time how long the rivers flowed, a bucket to drain out the flowing water, and a wooden block to change the stream gradient of our rivers. Meet scientists Isabella, Mila, Maddie, Kate, and Marin. The source of a river normally is a freshwater spring or precipitation. In this case, the source was a water flowing tube. A channel is the path where the water flows through the river. The wider and deeper a channel in a stream is, the faster the water flows. Stream gradient is the steepness of the slope of a river. After the water flowed in the container for ten minutes on one gradient, the gradient was increased for another ten minutes. This was also the independent variable of the experiment. Meander Meanders are the natural curves of a river. They develop over time as a river ages. Solution The solution in a river is the materials that cannot be seen. They can be dissolved minerals and rock or tiny particles.
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