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The half-life of water

In this investigation, using a tall tube filled with water, you let the water out the bottom of the tube, into a beaker/sink. You will record the level of the water at set intervals (every 5 or 10 seconds for example). You will then repeat this a couple of times and plot your average water level against time. You are then able to calculate the ‘half-life’ of the water column. This is a good investigation to make students discuss modelling a scientific principle.

This resource has been provided by Keith Gibbs.

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