Friday, August 20, 2010
Science Sunday - water and food (for lack of a snazzier name)
We continue to do experiments from our Usborne Science in the Kitchen book. This week, we did a set of experiments relating to water and food.
We talked about the reasons for dehydrating food - it's lighter for travel and it lasts longer. Then we rehydrated a bag of dried peas. Here are the peas right after I added water:
And here they are a few hours later - they popped the top off of the container!
Next, we dehydrated a cucumber slice using sugar.
The sugar draws out the water and leaves a big puddle within 10 minutes or so:
And lastly, I showed Crumpet what happens when some food gets wet in storage. We sprinkled a piece of bread with water and placed it in a plastic bag. Then, we dried out a piece of bread in the sun and placed it in a bag for comparison. Of course, if I didn't want the bread to mold, it would have molded much more quickly. This took forever. But in the end, we grew mold. Ta da!
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