Research on Lunch Bag's Heat Insulation Technology

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_____-____SCIENCE PROJECT PROPOSAL FROM____ -------

Question
Which lunch box brand is the best thermal insulator, Thermos, California Innovations or Zeomic?

hypothesis/prediction
Thermos Lunch Box is the best thermal insulator because it is more expensive than the other two lunch box types. If Thermos lunch box is the best thermal insulator then food in it should maintain its original temperature longer than the other two lunch box types.

Identify
Dependent Variable: Lunch box type.
Independent Variable: The losing and gaining of heat.
Variables Attempting to Control: Environmental temperature, The temperatures of food and thermal insulators.

proposed experiments
Materials [Where to get]:
* Zeomic lunch box [Canadian Tire]
* Thermos lunch box [Walmart]
* California Innovations lunch box [Walmart]
* Aluminum foil [Canadian Tire]
* Water [Home]
* Ice Cream[Superstore]
Apparatus [Where to get]:
* Thermometer(with needle) [Canadian Tire]
* Thermometer(Outdoor) [Canadian Tire]
* Kettle [Home]
* Refrigerator [Home]
* Timer [Home]
Methods - Experiment 1
1 Use outdoor thermometer determine the environmental temperature. 2 Use kettle to heat the water and split it into four equal cups. 3 Pour the heated water within each cup into different thermal insulators, and leave one cup outside all thermal insulators. 4 Collect temperature datas from each piece with thermometer(with needle) every 5 min and last for 2 hours.

Methods - Experiment 2
1 Use outdoor thermometer determine the environmental temperature. 2 Take ice cream out of the refrigerator and divide the them into four identical portions. 3 Use aluminum foils wrap each portion of ice cream and put them into different thermal insulators, and leave one portion outside all thermal insulators. 4 Collect temperature datas from each portion with thermometer(with needle) every 10 min and last for 2 hours.

type of data to be...
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