Thursday, November 13, 2008
A Good Sock
Today we restarted the lab we began last Thursday. We started off by filling our four glass bottles with water. The first test was on one with a wool sock on it and one without a wool sock. We stuck the probes in them and waited for 3 minutes. The temperatures to begin with were 43.2 for the uncovered bottle and 42.9 for the uncovered. Afterwards the numbers were 42.7 for uncovered and 42.8 covered. We took final temperature – beginning temperature and found the following answers uncovered -.5 and covered -.1. We did a second experiment with a cotton sock and then a wet cotton sock. At the beginning the cotton was 41.7 and the wet cotton was 41.2. Afterwards the cotton one was 41.5 and the wet cotton was 40.4. Again we took the final – Beginning. The answers were -.2 for cotton and -.8 for the wet. We learned that the bottle with wool had the less temperature change on the first experiment and the wet sock on the second had the biggest temperature change. This experiment showed us that wet clothing in cold weather makes you colder faster. The bottle cooled off faster than all the others by quite a bit.
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