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Filtering dirty water

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Description

Experiment to show a simple method of filtering dirty water. Can be linked to global issues

Resources

Large plastic bottle
White sand
Coarse sand
Gravel
Soil
Filter paper

Instructions

Cut off the bottom of the bottle, leaving sufficient for the top of the bottle to be upturned into it
Place a filter down into the open neck
Add two tablespoons of white sand
Add two tablespoons of coarse sand
Add two tablespoons of gravel
Mix soil with water and gently pour into the bottle
Observe how the layers filter the dirty out of the water
DO NOT ATTEMPT TO DRINK THIS WATER

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