How much do kids really know about the importance of drinking water?
Though we’re all told to drink lots of water from a young age, how many of us really know why hydration is so important? Kids especially aren’t always sure why they should be topping up their H2O and, as a result, can be reluctant to drink as much water as they should.
Understanding exactly why water is so important will help the pupils in your class to stay motivated about hydration. To help you get your message across, here are some key facts about water and the essential role it plays in the world’s life cycle.
Did you know there’s around 1.5 billion cubic kilometres of water on earth? That’s enough to fill 1.5 billion trillion litre bottles of water or 800 trillion Olympic sized swimming pools. However, as 97% of the world’s water is salty and 2.1% is frozen in glaciers and ice caps, just 1% of the water on earth is available for us to drink.
Did you know water is sticky? It loves to stick to itself and other things. In fact, this is one of the things that makes water so special. It means it can pull blood up the narrow vessels of our body, gives it surface tension and helps to keep it a liquid at room temperature.
Water is from outer space. All of the water that’s now on earth came here on asteroids and comets billions of years ago. Actually, it was 4.5bn to 3.8bn years ago to be precise.
The human foetus is around 95% water for the first few months. By the time we’re born we’re made up of around 77% water. While adults vary between being 60% and 70% H2O.
We can’t live without water. If we didn’t drink liquid for just three days, we wouldn’t survive. In very hot weather or very dry weather, we might just have a day or two to live without water.
To help drill in the importance of water for your class, here are a few fun quiz questions to ask them next time you’re talking about H2O.
Test your class
How much of the human body is made up of water? Answer 60%-70%
How much water should you drink daily for good health? Answer 8 glasses
How much of the water on earth is available to drink? Answer 1%
How long could you live without water? Answer 3 days
True or false: water is made up of two elements? Answer true