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This Week's Experiment - #226 Finding Fat
I wanted to do a health related experiment this week. As I sat here munching
from a bag of potato chips, I thought it might be interesting to look at the
amount of fat in different chips. If nothing else, it would be a good excuse
to open those other two bags of chips in the cabinet. To try this, you will
need:
several different kinds of chips
a paper towel
Gather several different kinds of chips to test. I used corn chips, potato
chips, tortilla chips, and pretzels. You could also use things like popcorn,
crackers, cookies, and other foods. Place the paper towel on a flat surface.
For each type of chip, draw a circle large enough to hold three or four
chips and write the kind of chip by the circle. Place three or four chips
into each of the circles, looking for chips that are fairly flat and about
the same size. Eat the ones that are too small or too curly. Just don't
overdo it. We would not want you to wind up at the doctor's.
Now all you have to do is wait for about 30 minutes. During that time, you
must resist the desire to nibble on the chips in your test. You may also
have to defend them from cats, dogs, younger brothers and other lower life
forms.
After about 30 minutes, remove the chips. You could dump them into a bowl
for people to snack on. I ate mine. Then look at the paper towel. Unless
you had REALLY oily chips, you probably don't see much. Pick up the paper
towel and hold it in front of a window or light. Now you see something. The
oil spots on the paper towel show up as light, "wet looking" spots on the
towel. The more oil there was in the chips, the more oil there will on the
paper towel. The oil soaks into the paper and acts as a pathway to carry the
light through the paper.
I found that the corn chips had the most, closely followed by potato chips.
The pretzels had the least, which means that I should eat more pretzels and
fewer corn chips.
From Robert Krampf's Science Education Company
PO Box 60982
Jacksonville, FL 32236-0982
904-388-6381
krampf@aol.com
To start receiving the Experiment of the Week, just
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