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ENERGY Summary from Nästegårdsskolan Sweden

ENERGY Summary from Nästegårdsskolan Sweden . We started with making a battery out of copper plates , galvanized nails and saltwater electrolyte ( NaCl ). We also made measurements with electrodes of copper and lead . .

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ENERGY Summary from Nästegårdsskolan Sweden

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  1. ENERGYSummaryfrom NästegårdsskolanSweden

  2. Westarted with makinga batteryoutofcopperplates, galvanizednails and saltwaterelectrolyte (NaCl). We also made measurements with electrodes of copperand lead.

  3. Nextwechangedelectrolyte from NaCl (salt) to different fruits. Wemade the experiment in all 50 small groups and worked out an average value. There was a big difference in voltage between electrodes of Cu/Zn and electrodes of Cu/Pb.

  4. Wealsomademeasurement of the voltage with electrodes in different sizes and distances.

  5. Conclusion: To get the greatestdifferencein the voltageyoumust change the metals (electrodes) in the ”battery”. We could see a slight difference in voltage when we changedsizeofelectrodes or whichfruit (electrolyte) weuse. When we tested different distances, we could not measure any difference. The voltageincreaseswhen the metals are far apart in the electrochemical series.

  6. The lamp requires 1, 8 V. How do we get it to shine? When we series circuit three fruits, with Cu/Zn electrodes, we came up in 2.28 V. The lamp shines!

  7. The EU has agreed that the renewable sources of energy consumption, for the Union as a whole, will increase to 20 % by 2020. In Sweden it is now about 50 % from renewable sources, highly dependent on our waterpower plants.

  8. References: www.energimyndigheten.se www.svenskenergi.se www.miljomal.se

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