Friday, October 28, 2011
Halloween Party FUN and surprises!
What a great time last night!! We accomplished so much in just 1 1/2 hours! We first recapped our ENERGIZE badge and moved on to working on our INVESTIGATE badge! With the first cold front of the season arriving...what a perfect night to learn about insulation to conserve energy! Our first investigation was an experiment of three glass jars filled with hot water-about 120 degrees. We left one uninsulated, insulated one by wrapping in towels and the other by wrapping in plastic grocery sacks. We let them sit to the side while we then jumped into our Halloween treats! We made banana ghosts, witches hats, monster toes, witches brooms, chocolate bones, and more. We created, we ate, we laughed, and we ate some more! Then we checked on our experiment and learned that those thin plastic grocery bags insulated the hot water better than the thick towels did! The uninsulated jar was at 98.7 degrees, the towel wrapped jar at 101.6 degrees and the plastic wrapped jar at 103.7 degrees. Who would've thought? Our girls did! Within seconds of the results they knew the reason for the surprise result was that the plastic has no holes for heat to escape and the towels, although with very tiny holes, allowed cold air in thru the fabric. Good job girls! You guys are SO smart!