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Science fair update

April 11th, 2006 at 02:40 am

We finished the volcano. The only thing we bought was spraypaint.



We made the base using a water bottle which had the top cut off. Inserted a container which held single serving applesauce. Built newspaper around it, taped that down and then papier-mache over the top of that.

When the papier-mache dried, we spray painted it brown. When that dried, I poked holes in the volcano with a tiny knitting needle and we poked springs of rosemary and other plants from our yard.

Then, we made the poster. We did have to buy the posterboard. I printed headings using my computer. We walked him through the demonstration and talked about what happens when you mix baking soda and vinegar - how it forms a salt (sodium acetate) and carbolic acid, which then breaks down to CO2 and water. The CO2 is what makes the bubbles we see. Carbolic acid is what they add to soda to carbonate it.

I put red food dye in the vinegar. Poured it into an old squeeze mustard bottle and mixed it. I put a label on that "lava juice".

It sounds like I did a lot and I did, but DS was right there helping and learning with me. I made him to a test run and give a shpiel about it. I hope he remembers tomorrow.

3 Responses to “Science fair update”

  1. PRICEPLUS Says:

    Reminds me of my grammer school projects in science. Remember the other favorite of a mobile of the solar system!Smile

  2. cercis Says:

    I'll have to remember the solar system tomorrow. I've learned the blue's clues song to remember them in order and a little fact about each.

  3. mom2fur Says:

    Oh, you did a great job! Good work!

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