Insulation

Samantha

Contents

1. Purpose2. Materials3. Hypothesis4. Procedure5. Observation6. Pictures of the experiment7. Conclusion8. Big Idea

Purpose

To find out what materials are the best insulation.

Keeping the heat in and the cold out.

Materials

• A woolen sock• A plastic bag• A piece of newspaper• A piece of tinfoil• Four Plastic bottles• A thermometer• Hot water• Tape• A rubber band

Hypothesis

I think the woolen sock will be the best insulator, because woolen socks keep my feet really warm when I am out in sub zero temperatures.

Procedure

1. Pour an equal amount of hot water into each of the four bottles.

2. Put the caps on all of the bottles.3. Wrap one bottle in tinfoil then tape it so it will stay in

place.4. Wrap the second in newspaper and tape it again.5. Wrap the third in a plastic bag and put a rubber band over

it.6. Pull a woolen sock over the fourth.

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7. Take the caps off to take the temperature of each of the bottles. Make sure they are all about same temperature; if they differ by three degrees or more, fix it by adding hot/cold water.

8. Take the temperature again in five minutes.9. Take it again in ten minutes.10. Take it for the last time in twenty minutes.11. Record the information.

Procedure (continued)

Observation

Material Temperature at the beginning (Celsius)

5 minutes later

10 minutes later

20 minutes later

Tinfoil 92:C 81:C 76:C 65:C

Woolen Sock 92:C 83:C 78:C 71:C

Plastic Bag 92:C 86:C 74:C 62:C

Newspaper 92:C 84:C 80:C 69:C

Pictures of the experiment

Woolen Sock Newspaper

Tinfoil Plastic Bag

Conclusion

My hypothesis was correct, the woolen sock was the best insulation over time. In this experiment the woolen sock bottle lost 21:C, the plastic bag bottle lost 30:C, the tinfoil bottle lost 27:C and the newspaper bottle lost 23:C. So the plastic bag is the worst insulation over time.

Big Idea

To keep things hot for longer, (e.g hands, feet, etc.) the best material to use would be wool. To keep things hot for five to ten minutes, newspaper or plastic bags would be the better insulation materials.

Thank You