aluminum foil vs. plastic
TRANSCRIPT
GENERAL OBJECTIVE:
• To test the effectiveness of the aluminum foil in prolonging the temperature of the substance.
SPECIFIC OBJECTIVE:
• 1. Determine whether the aluminum foil will prolong or not the temperature of the substance.
• 2. Compare the temperature of the substance in the two set up.
Aluminum foil
Aluminum foil is essentially thin sheets of aluminium metal, generally less than 0.2mm thick. They are easily
folded and wrapped around objects of any shape and size, making them
useful in food packaging, cosmetics, pharmaceuticals and chemical
products
Plastic
Plastic wrap is a thin film of plastic that is sometimes used to wrap and
seal food items in a container in order for the food to be kept fresh
for a longer period of time. The plastic film is approximately about 0.01mm thick and it can cling onto a smooth surface without the use
of any adhesive.
FLOW CHART of the PROCEDURE
Prepare all the needed materials.
Pour out hot water on the trays.
Measure initial temperature of the water in the two set
– up. Record the data.
Cover the tray with aluminum foil and
the other with plastic.
Leave the set- up for about 30
minutes.
Measure the temperature of
water in the two set up. Record the data
Analysis
• Based on the Result obtained in the experiment , the aluminum foil sustains the temperature of the substance for a longer time compared to plastic used as wrapper.
Conclusion
• Aluminum foil is an effective material in the purpose of prolonging the temperature of the substance.
Reason:
• Aluminum foil helps to maintain the temperature of the food by minimizing the transfer of heat from the food to the surrounding and vice versa. Besides prevented the flow of heat by conduction, the reflective surface of the foil helps to prevent heat loss by radiation - this does not happen for the cling wrap, which does not have an opaque, reflective surface.. Therefore, hot food that is wrapped in aluminum foil will remain hot for a longer period and chilled food that is wrapped in aluminum foil will take a longer time to thaw.
Reason :
Foil cause its a conductor of heat ! aluminum foil deflects heat, so if you wrap it and there's space between the food and the foil, the heat will travel up, but then it will be pushed back down toward the food. but it won't keep it long for a long period of time