Water Assessment - Term One

My Water Assessment For Term One

H20

This is what I learnt about H20 (water) this term.  The word H20 means  two hydrogen atoms and  one oxygen atom is put together to create H20. Water comes in three different states, a solid, liquid or a gas.  This term we made oobleck.  Oobleck is a non-newtonian fluid so when pressure is applied it will turn to a solid. When less pressure is applied it will be liquified. Another experiment we did was layering liquids, layering liquids is all about the density of liquids. The liquids can have different densities by the thickness. Now let’s talk about  the water cycle. Baiscly the water cycle is about condensation, precipitation and evaporation. What happens is that the sun evaporates the water then the water gets stored up inside the clouds which is called  condensation, next when the clouds get too full it rains and causes precipitation. Getting back to the experiments have you ever wondered  how to bend H20? It is actually quite simple to bend H20, all you need is static electricity, but really what makes static electricity? Well it needs a negative charge and a positive charge. Can water walk? The answer is yes. The reason the water walks between the cups and paper towels is capillary action. Capillary action is caused by a liquid being able to flow through narrow spaces. Do you know how much work it takes for your drinking water to be safe? Much more than you think. We went to see it at the Pirongia Water Works. How it works is that the water is collected in Pirongia stream then goes through screening. Then goes into the first pond, where it gets rid of most of the bacteria. Next through to the second pond that gets rid of the extra nutrients. Then the algae and extra bits go to the bottom. Next it goes through another screening to get rid of all the particles. Then it goes through the UV ultra violet light treatment to get rid of the micro bits floating around. Then gets given out to Pirongia and Te Awamutu. And some gets stored in a big tank. This is everything I’ve learnt this term, but just to finish here is a photo.

Hope you enjoyed.