Reference no: EM132636668
Streams follow the path of least resistance as they flow downhill due to gravity.
The origin of stream drainage patterns
Stream drainage patterns are controlled by the slope and type of material over which the streams are flowing.
- The variability of geologic materials will determine the magnitude of slope, meaning that differing geology lead to steep or more gently sloped streams.
- The material's resistance to erosion influences where the streams will erode the material the fastest and establish a channel.
For each of the landscapes described below, determine whether the location and direction of streamflow is controlled primarily by slope or by geologic variability.
Drag the appropriate items into their respective bins.
-solid igneous bedrock of uniform composition and slope
-areas of hard rocks interspersed with areas of softer rock
-peaks surrounded by valleys
-solid bedrock that is fractured in some areas
-layers of solid sedimentary, similar rock
Direction and location of streamflow controlled primarily by geology
Direction and location of streamflow controlled primarily by slope