How do scientists calculate water flow? Students will use mathematics, reasoning, and the scientific method.

 

They will:

• Measure volume of fish tanks in the hatchery

• Measure cross sectional areas

• Determine water velocity using a tennis ball, distance and a timer (and subsequently determine flow rates)

  • In the hatchery channel

  • In a stream

• Be able to explain why surface velocity may not be representative

• Record data from a scientific flow-meter and explain its operation

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Data to take back to school will allow:

• Comparison of instrumental and 'tennis ball' methods for flow determination

• Discussion of different types of flow in water bodies

• Calculation of how long it would take to fill a fish tank in the hatchery

• Discussion of scientific method, replication etc. 

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