October 23, 2015
Here’s a great science experiment for kids straight from our new Project Body book! We thought it was rather appropriate for Halloween as well. This science experiment for kids demonstrates how the kidneys clean blood by filtering out the larger particles it needs to save. You will need:A jugWaterRed food colouringCrushed chalk (about ½ tsp)Coffee filterElastic bandLarge glass jarHow to make:1. Add about 150 ml of water to the jug2. Add a few drops of red food colouring and the chalk to the water
3. Place the filter over the glass jar and secure with the elastic bad so that it dips down into the jar by a few centimetres4. Slowly pour the coloured water into the jar with the filter on top.5. Notice how the filter traps the chalk while letting the coloured water drip through. In the same way, your kidneys (the filter) let blood circulate while retaining the things they need to save (the chalk)
Take a photo of your experiment and share it with us on Facebook or Twitter to enter our #HalfTermHero competition. Find out more here.
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