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Science project idea, on substances which are good and poor conductors of heat.
Conductors of Heat- Science Project Idea
Conductors of Heat Science Experiment I Place in a cup of hot water a silver spoon and a tin or plated spoon.After a few minutes touch the handle of each.Result?Conclusion? Conductors of Heat Science Experiment II Fill a test tube with water in which has been placed a piece of ice weighted by having wire wrapped around it.Heat the test tube near the top.Result?Conclusion? Recall your experiences on a cold morning of stepping on a bare wood floor; on a carpet; on paper; or on a tile or stone floor.What are your conclusions as to the power of these different substances to conduct heat? These observations are sufficient to show you that substances differ very much in their power of conducting heat.The metals may all be classed as good conductors.They may be ranked in the following order: - Silver
- Copper
- Aluminum
- Brass
- Zinc
- Tin
- Iron
- German Silver
- Mercury
Substances which are medium conductors of heat are : 1. Rock 2. Ice 3. Porcelain 4. Tiling 5.Glass 6.Water 7.Plaster Poor conductors of heat are : 1. Wood 2. Asbestos 3. Paper 4. Cork 5.Wool 6.Feathers 7.Air Science Project Explanation Questions: 1. Why birds ruffle up their feathers on a cold day. 2. Why a light-weight feather or down coverlet keeps one so warm. 3. Why heat pipes in basements are frequently covered with asbestos, and mats of this material are used under hot dishes at the table. 4. Why asbestos is fastened to the wall behind a stove. 5. Why newspapers folded under the coat will protect one from becoming chilled on a very cold day. 6. Why the thermos bottle is stoppered with cork. 7. Why the water in deep holes in a lake remains cold during the hottest part of summer. 8. Why iron is better than brick or porcelain for stoves. 9. Why bakers' ovens are sometimes inclosed in brick. 10. Why tea-kettles frequently have wooden handles. 11. Why oven door handles are usually made of coiled wire. 12. Why dead air spaces are left between the walls of a building. 13. Why building paper is placed in the wall of a wooden house. 14. Why the outer vessel of an ice cream freezer is made of wood. 15. Why farmers who plant wheat in the fall of the year are glad to have much snow in winter. 16. Why the ticket choppers at the elevated and sub- way stations keep a wooden box beneath their feet in cold weather. 17. Why ice is packed in sawdust. 18. Why on a very cold morning outdoors the fingers will freeze to the metal head of an ax but not to the wooden handle. 19. Why iron is a good material for steam or hot water radiators. 20. Why a loosely fitting overcoat is warmer than one which fits tightly.
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