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Which fabric is the best insulator 9-2 Project 1.

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Presentation on theme: "Which fabric is the best insulator 9-2 Project 1."— Presentation transcript:

1 Which fabric is the best insulator 9-2 Project 1

2 Purpose To see which fabric keeps ice frozen the longest

3 Hypothesis I think that fleece will be the best insulating material because it is thicker then the other materials.The thinner the material the quicker the ice will melt.

4 Materials 5 of the same size small containers 5 different pieces of fabrics cut into the same size (Fleece,Terry Cloth,Wool,Polyester,Corduroy) Measuring cup 5 of the same size large containers Cup Timer

5 Procedure 1. Fill 5 small plastic containers with 100ml of water 2. Place them in the freezer for approximately 8 hours until completely frozen 3. Cut fabric into the same size pieces 4. Wrap a different piece of fabric around each container of ice 5. Place each wrapped container of ice into larger Ziploc plastic sandwich containers and put the lid on them 6. Measure the amount of melted water at the base of each container at one hour intervals 7. Record results in a table. 8. Measurements are made by dipping a ruler into the melted water. 9. Repeat this three times for best results

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7 Variables Manipulated Variable: the different fabrics used to wrap the ice. Responding Variable: the time it takes for the ice to melt under each fabric. Control Variables: 1. The temperature of the room(21 C) 2. The amount of ice in each container 3. The size of the pieces of fabric 4. The placement of the cups in the freezer. (Placed in a row in the very back of the freezer) 5. Containers were a consistent size.

8 Results All samples of water froze at the same rate. The ice in each container melted at different rates depending on the fabric it was wrapped in.

9 Results: Trial 1 5:00pm6:00pm7:00pm8:00pm9:00 pm10:00 pm Polyester 0812152124 Wool 0710141922 Fleece048121720 Terry Cloth04791519 Corduroy0710131620

10 Results: Trial 2 5:00pm6:00pm7:00pm8:00pm9:00 pm10:00 pm Polyester 0711162023 Wool 0811122021 Fleece037121820 Terry Cloth039111820 Corduroy068121722

11 Results: Trial 3 5:00pm6:00pm7:00pm8:00pm9:00 pm10:00 pm Polyester 0812162024 Wool 0610121921 Fleece038121820 Terry Cloth0210111620 Corduroy0712131822

12 Results: Average Trial 1Trial 2Trial 3Average Polyester 16.015.41615.8 Wool 14.4 13.614.1 Fleece 12.21212.212.1 Terry Cloth 10.812.211.811.6 Corduroy 13.21314.413.5

13 Results: Trials

14 Results: Average

15 Conclusion Based on my observations it seems that the Terry Cloth had the best insulating qualities. (11.6 mm) The fabric that acted as the worst insulator was polyester. (15.8 mm) My initial thoughts were that fleece would be the best insulator. However my experiment has shown that although fleece is a good insulator the Terry cloth appears to be a slightly better one.

16 Sources of Error Where I placed the cups in the freezer was a big factor on how the mixtures froze, because it was colder in the back of the freezer rather than the front Insure that each container was far enough away from the other containers so that they all were at the same outside temperature. Errors in measurements. Any chemicals in the tap water could have affected the results in freezing.

17 Ways to Improve 1. Increase the number of trials to get a more accurate result. 2. Use finer more accurate measuring instruments (like a graduated cylinder). 3. Make sure that each container was wrapped in exactly the same way with the insulating material.


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