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Observation

It is observed that the water in the conical flask wrapped with aluminum foil remained the coldest throughout the experiment.
 

Packaging material Temperature of the water in the conical flask (°C)
  Start 30 min 60 min 90 min 120 min
None 5 7.5 9.5 12 14.5
Aluminum foil 5.5 6.5 8 9 10.5
Plastic wrap 5 7 9 10.5 13

The graph below represents the results of our science experiment:

food wrap science fair project

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Complexity level:
4
Project cost ($):
20
Time required:
1 hour to prepare, 2 hours to perform the science project experiment
Material availability:
Very easily found. You will be able to find most of your materials at a local grocery store/supermarket. If you can't find conical flasks, you can improvise and use 3 large identical mugs
Safety concerns:

Basic safety requirements