Technical data

Salinity changes of a watercourse with Cobra SMARTsense

Article no: P1521469

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Principle

In this experiment it is shown how the salt leaching of a disused potash dump drastically increases the salt concentration of a stream, how the salt content downstream only gradually decreases again and how the increased salt concentration can still be measured downstream after it flows into a river.

Benefits

experiment is part of a complete solution with numerous experiments in the field of ecology
Measurements possible indoors and outdoors, for mobile use
Especially understandable and didactically prepared description of the experiment (relevance to everyday life, etc.) including protocol questions.
Future-oriented teaching: Integration into digital science lessons with tablets or smartphones.
Increased motivation of students by using the intuitive measureAPP.
Increased media competence.

Tasks

measuring the conductivity of a flowing water at various points
compare measured values and make statements about the reasons for the changes

Learning Objectives

Groundwater
salt washout
fertilisers
anthropogenic influences

Scope of delivery

Cobra SMARTsense - Conductivity, 0...20000 µS/cm, 0...60°C (Bluetooth)	12922-01	1
measureAPP - the free measurement software for all devices and operating systems	14581-61	1