Stream Geology Watershed
Activity Module
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ACTIVITIES
Geological History - Water, W. PA,
and World
Students create a timeline of geologic history that will show the
amount of time it takes for certain geologic processes to occur
on Earth. In addition to worldwide events, focus is given to Western
Pennsylvania geologic history and how it affects us today. Students
will also focus on various events that influenced our waterways
through time.
Flowing Streams
Students will produce a depth profile of a stream, measure flow
velocity differences across the stream at various points, and correlate
stream flow to depth and substrate sediment size.
I Live to Sieve Stream Sediments
Using sieve sets, students will investigate stream substrate, classifying
the rocks and sediments into size classifications. Comparisons of
substrate collected from various places in the stream will also
be made.
Pebble
Count Procedure
Students will use a pebble count procedure to determine the average
substrate size of a waterway. This method involves entering the
stream, selecting random pieces of substrate (clay/silt all the
way up to a rock), and measuring the substrate size.
Settling Sediments
Students will investigate how sediments are deposited in different
types of waterways or locations within the same waterway using sedimentation
bottles that they make or that are pre-made. Students will review
sediment sizes and types and make connections between deposition
and the formation of certain types of rocks.
Interpreting River Sediments
Students will investigate various sediment samples from a watershed
for a metal pollutant using a simple chemistry test. They will interpret
the results and use a map to try to determine the source of the
pollutant and why it is found in some of the sediments of the watershed.
Creek
Rocks
Students collect rocks from a creek bed and identify them using
classroom resources, their textbooks, or rock identification guides.
Students then summarize their findings to include types of rocks
found, origins of the rocks, and how the rocks got into the creek.
Stream Movement Slide Show
Students will watch a scripted slide show and complete worksheet
as they watch. The slide show is about stream drainage, stream movement,
channels, erosion, sediment transport, sedimentation, and deposition.
Stream Table - Waterways on the Move
A stream table will be used to demonstrate stream drainage, stream
movement, stream maturation, channels, meandering, force of water,
erosion, sediment transport, deposition and other topics.
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