Factors that Affect River Flow

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Presentation transcript:

Factors that Affect River Flow

But First...Let’s Review How Water Erodes Soil Pulls material from bottom and sides of a river because water is the… Universal Solvent! Uses ______ to dissolve the solute. Faster water = more erosion polarity

How Water Erodes Pulls material from bottom and sides of a river Faster water = more erosion Abrasion – The wearing away of rock by a grinding action

How Water Erodes Load – any, and all, sediment in the water Faster water = larger load

Factors Affecting Rivers Load Slope Flow Volume Streambed shape Depth Width Depth and width are determined by LAND CHARICTERISTICS Ex: Type of rock, amount of soil, soil composition All effect water speed! River’s speed dictates the River’s load!

Slope How would slope effect the flow of a river? How would slope effect the load of a river?

Flow Volume Looking for volume of water per second To find volume…take the average area of a cross section Flow volume = (velocity of stream)(width)(depth)

Streambed Shape

What is the speed at which a river can move coarse sand? Small Pebbles? Large boulders?

A stream’s speed increases to 600 cm/s during a flood A stream’s speed increases to 600 cm/s during a flood. What are the largest particles the stream can move?

What is the relationship between the speed of a stream and the size of particle it can move?