Wednesday, September 21, 2011

Science Experiment Day


Today we some did neat and interesting science experiments. The first one that we did was a one where we created some flat paper boats. Then we made a notch in the back where we put the “motor”.  We made four boats and on three boats were chewed bubble gum, soap and facial tissue. On the last one, it had no “motor”.  

 Then we put them in a tub of water and let them float. The facial tissue, gum and the one with no motor were the ones that didn’t move very much, but the soap one went like crazy. It went in two circles and then finally stopped. 

The next science experiments that we did were a one where we put pepper in a bowl and then dipped items in. First we dipped a piece of facial tissue and gum and the pepper kind of moved out of the way but no more. The pepper was like scared of the soap because when we put it in, the pepper moved out of the way and quick.

From left to right, soap,facial tissue, chewed gum, and none
This is  me (Spencer) dipping the soap into the peppery water
This is after when we discovered that the pepper goes away from the soap

3 comments:

  1. That's a neat experiment. I've never tried placing different things in pepper before. Why did it react differently to the soap? Would this work with different kinds of soap?

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  2. From what I read, there is nothing that says that different soaps make a difference. I think that it wouldn't matter. I asked my mom to do an test to try it, so we will have the results by tomorrow

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  3. The soap reacts differently to the soap because when the soap is put in the water, it breaks a film on the top of the water called the surface tension which can hold stuff up or let it go below the surface. In the book in italics, it says " soap decreases the surface tension of water". That is why it reacts different than to the gum or facial tissue.

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