Presentation on theme: " Problem: What type of material will transfer energy the best?"— Presentation transcript:
Problem: What type of material will transfer energy the best?
List of materials: Rubber stopper Glass mini beaker Aluminum bar Copper bar Popsicle stick Steel bar Paper clip Plastic HK paper clip Penny Rubber band PVC cylinder Nylon cylinder
MetalsNonmetals ShinyDull HeavyNot Heavy Some are RadioactiveNot radioactive HardNot Hard (softer) When they are hit-they flatten or bendWhen they are hit-break, shatter, splinter High melting pointLow melting point
If we test metals vs. nonmetals then the ___________ will transfer the energy the fastest because of the arrangement and density of their molecules.
1) Which of the item(s) will become the coldest after sitting in ice? 2) Which of the item(s) will make your fingers hot the quickest? 3) Which of the item(s) will light up the bulb?
Explain the direction of energy transfer with materials in ice Hint: where did the energy start and where did it go? Draw a picture using arrows showing the transfer of energy Evidence-what did you see in lab that proves your conclusion
SamplesLights up-YES or NO 1. Aluminum 2. Copper 3. Glass slide 4. Rubber stopper 5. Steel bar 6. Popsicle stick 7. Plastic straw 8. Paper clip 9. Plastic Paper clip 10. Rubber band 11. Staple 12. Coin 13. Pencil Lead
SamplesLuster Y/N Ductility Y/NLights Up Y/N 1.Aluminum 2. Copper 3.Glass 4. Rubber 5. Steel 6. Wood 7. Plastic 8. Paperclip 9. Plastic Paper clip 10. Rubber band 11. Staple 12. Coin 13. Pencil Lead
1. Discuss the differences between the metals and the non metals. (what should have been in common with all the metals and the nonmetals—use your DATA TABLE for help) 2. What samples made good conductors? 3. Why are these good conductors? 4. What are poor conductors called? 5. What causes things to be poor conductors? 6. How did the results compare to your predictions?