With no colourful advertising campaigns, no eye-catching branding and no added sugar, it can be hard to get kids really excited about water. Though everyone knows it’s good for you, convincing kids that water is exciting can be tough.
An excellent way to get children interested in water is to get them involved in a few water based experiments. Incredibly easy to set up, even if you know nothing about science, this fascinating test will show kids just how special H2O really is.
Can water walk?
Ask your kids if water can walk and they’ll probably shout ‘no!’. However, sit them down to show them this experiment and they may soon change their minds.
To make water walk, all you need is seven plastic glasses, some food colouring, a few paper towels and, of course, some water. Start by lining up your cups and then half fill every other cup with water. Put a few drops of food colouring into each glass of water, using different colours for each cup.
Next, you’ll need to fold a paper towel length ways so that it’s long and thin. Fold it in half and then place one end of the towel in a half full glass and the other in an empty one. Repeat this for all the glasses until you have paper towels going in and out of every glass in a continuous line. You’ll quickly see the water being to climb up the paper towels, changing the colour of the towel as it goes.
Now it’s time to leave your cups for a few hours.
When you come back, you’ll see that some of the water has ‘walked’ from the filled glasses to the empty ones, equalising the water level and creating a rainbow of new colours on the way.
If your kids want to know why the water has upped sticks and moved next door, you can explain to them it’s thanks to capillary action. The water moves through tiny gaps in the fibres of the paper towel and it happens because the adhesive force between the paper towel and the water is stronger than the force within the water itself.
Though the water may not have strapped its walking boots on and strolled into the neighbouring glass, there’s no denying that it has moved from one cup to another. Hopefully, the colourful nature of this experiment should help to get your kids fired up about water.
You can see the experiment on YouTube here, feel free to film your own and we’ll feature it on our Facebook page!
For more interesting H2O facts, take a look around our website today.