Science Fair

It’s done. At least my part is.

I found this experiment where “adult beverages” were put through a Brita filter. Beer, vodka, a few malt drinks, etc… You can watch it here if you want (because, there are a few adult words, too). I’ll save you 10 minutes by telling you that, according them, most of the drinks they filtered tasted like water. Even the vodka.

I thought this would be an awesome test for regular kid beverages. As soon as I brought it up with Crash he was all in. Would the Brita filter make regular drinks taste like water, too?

So we decided on 8 different drinks to filter. Water, Coke, Grape Kool-Aid, Gatorade, Apple Juice, Orange Juice, Milk and Chocolate Milk. We filtered chicken broth, too. However, we concluded it didn’t fit in the project because it, technically, wasn’t a drink.

With a brand new filter and borrowed pitcher (our pitcher is too big) and our eight drinks, we began testing. We set a bit of each drink aside so we could compare color and smell before and after filtering. You’ll never believe what we discovered.

Most of the drinks had a slightly altered color. They looked watered down. However, upon tasting them we found that only two of them actually changed their taste. The Coke lost its fizz. Otherwise, I think it tasted like flat Coke. The orange juice tasted extremely watered down. The rest? They all tasted identical to their pre-filtered counterpart. What I found most fascinating was the length of time each took to filter.

IMG_4908

You can clearly see the difference in color

Some, like the apple juice and Kool-Aid filtered very quickly. While others, like the chocolate milk filtered extremely slowly. So slowly in fact that Crash had time to go play with his brother while we waited. The orange juice we stopped early because it pretty much stopped.

Crash’s hypothesis was that they would all taste the same. I thought for sure, I would have bet good money on it, that they would have had drastically different tastes. Especially after watching that video where the Brita made alcoholic beverages taste like water. So they said. I was wrong, he was right.

The project is done now. An added element to the project here that’s different than it was in the States is the presentation. The kids have to present their project to their teacher and class. The top so many best judged projects move to the cafeteria to be judge by science fair judges with the rest of the school where they’ll present again.

Knowing this, we made Crash practice his presentation over and over. Last night at bedtime I practised with him again and when mom came in he told her, “I nailed it”. So this morning we practised one more time to makes sure all the information didn’t leak out on to his pillow and I recorded it. He didn’t want me to at first. Then we mentioned putting it on his YouTube channel and he couldn’t wait to get started. So, for your viewing pleasure, here is Crash presenting his filtered drinks experiment. Feel free to visit and subscribe. He mostly does/will do Lego builds.

 

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21 thoughts on “Science Fair

  1. I’m filing this away for later. I’m a geologist, and other than neat fossils, we’re a boring lot. Unless we’re drunk. But that would be inappropriate for a school project.

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    • Rocks filter water, don’t they? Or there are underground rivers that get filtered through the earth. What about a large scale filter 🙂 After the kids go to bed I’ll filter the alcohols and see if they change taste.

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      • I know “your kind”. My father in law’s oil tank sprung a leak through the night and caused quite a bit of contamination. It may not have been sexy but it involved big machines and to kids, big machines are better than exy things 🙂 Is that the kind of work you do?

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    • Hi Grumpy Frog! 😀 We did not use a new filter each time. We simply cleaned/flushed out the one we had used before. Scientifically speaking, yes, we should have used a new filter each time. But since we were testing 8 drinks I didn’t want to buy 8 filters. We did clean it thoroughly after each use, if that counts.

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      • Flushing the filter works for me , after all , flushing prepares a toilet for the next use. Although neither procedure will get you published in Scientific America. When he repeats the test for his thesis in college I would lean towards 8 new filters.

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      • But then how do we know each filter is working identically? We’ll set our sights a bit higher this year. This year we aimed for 3rd grade Science Fair. Next year, Scientific America 🙂

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