Stream Flow Estimating Cubic Meters Per Second
Stream Flow Estimating Cubic Meters Per Second Name:
Purpose: In this lab you will use methods similar to field scientists to estimate the amount of water flowing down Bull Run Creek.
Materials:
Floating object
Meter Stick
Stop Watch
Procedure:
1. Begin by estimating the velocity of this stream as you did in a previous lab. Measure 3 meters on shore and time how long it takes an object to float those 3 meters.
2. Calculate the velocity Velocity = distance
Time
Time to float 3m________ seconds
Velocity ____________ meters per second
3. Now you need to estimate the area of this section of the creek.
Depth in middle of the stream in Meters, use decimals ex: 50 cm = 0.5 meters
Depth ___________meters
Width from shore to shore ________meters
Area = length x width
In this case area = depth x width
Area _____________meters squared
4. To find the volume of water flowing you must multiply your area by your velocity
Volume of flow = velocity x area
Volume of flow = __________________cubic meters per second
Analysis:
1. How many cubic meters of water are flowing down Bull Run Creek each second?
2. How many cubic meters of water are flowing down Bull Run Creek each day?
3. What can make the volume of water flowing down Bull Run Creek increase?
4. Would altering the size of the creek with construction equipment change the volume of water flowing downstream per second? For example the stream was made to be more narrow and shallow would that change the volume of flow? Yes or No? Explain.
5. Give at least 2 sources of error for this lab.
6. Please pick up 1 piece of trash from the park and throw it out in a trash can. Thank you!
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