logging in or signing up fruit batteries (1) MrPeters Download Post to : URL : Related Presentations : Let's Connect Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 2414 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: November 23, 2010 This Presentation is Public Favorites: 1 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Introduction : Introduction Enclosed materials convert chemical energy to electrical energy through redox reactions. Fruit (enclosed material) can produce electric currents. Research : Research The energy to light a bulb comes from the reduction-oxidation reactions when metals and certain solutions meet. Oxidation: zinc nail loses electrons. Reduction: copper gains electrons that were lost by the zinc nail. Overtime, zinc anode becomes positive and copper cathode becomes negative, lighting the bulb with the circuit of electrons. Problem : Problem How will different fruits’ pH affect the amount of electrical current generated? Hypothesis : Hypothesis The lower the pH of a fruit is, the more energy it will generate, and the brighter the bulb will light. The Experiment : The Experiment Preparation : Preparation Experimental Group Control Group Independent Variable Dependent Variable Control Group Materials : Materials Procedure : Procedure Measure pH of fruit with pH paper Cut fruit with knife in four equal pieces Slide 10: Insert zinc nail and copper penny into fruit Connect the cathodes and anodes to make a circuit with the LED Slide 11: Repeat with other fruits Use the same system with water Data: Lemon : Data: Lemon Data: Orange : Data: Orange Observation: Orange & Lemon : Observation: Orange & Lemon Data: Apples : Data: Apples Data: Pineapple : Data: Pineapple Observation: Pineapple & apple : Observation: Pineapple & apple Data: Banana : Data: Banana Data: Water (control) : Data: Water (control) Observation: Banana & Water (control) : Observation: Banana & Water (control) Sources of Error/Improvement : Sources of Error/Improvement Micro Ammeter Pennies The Real World : The Real World Conclusion : Conclusion Our hypothesis was correct! When a fruit has a zinc anode and a copper cathode connected to a LED bulb, the higher the pH, the more electrical current will be generated. The most acidic fruits created the strongest electric current because acids are the base for the redox reactions to take place. (ex. Lemons, oranges) Bibliography : Bibliography “Battery (electricity).” Wikipedia. Wikimedia, n.d. Web. 20 Oct. 2010. <http://en.wikipedia.org/wiki/Battery_(electricity)>. Buckley, Patrick, and Lily Binns. The Hungry Scientist Handbook. London: Harper Paperbacks, 2008. Print. Cooperative Extension Service; University of Kentucky, and College of Agriculture. “Water Content of Fruits and Vegetables.” College of Agriculture. University of Kentucky, n.d. Web. 20 Oct. 2010. <http://www.ca.uky.edu/enri/pubs/enri129.pdf>. “Electrical Conductivity: Measuring Salts in Water.” lake. Access. N.p., n.d. Web. 20 Oct. 2010. <http://www.lakeaccess.org/russ/conductivity.htm>. “Lenntech”. “Water Conductivity.” Lenntech, Water Treatment Solutions. Lenntech, n.d. Web. 20 Oct. 2010. <http://www.lenntech.com/applications/ultrapure/conductivity/water-conductivity.htm>. "Make Your Own Lemon Battery." EMR Labs. Quantum balancing, n.d. Web. 26 Oct.2010. <http://www.quantumbalancing.com/news/lemon_battery.htm>. O'Malley, John. Schaum's Outline of Basic Circuit Analysis. Boston: McGraw-Hill, 1992. Print. Parker, Lorin. Electric Curcuit Experiments: Conductivity of Acids. eHow. N.p., n.d. Web. 20 Oct. 2010. <http://www.ehow.com/video_4936282_electric-circuit-experiments-conductivity-acids.html>. Schlesinger, Henry. The Battery: How Portable Power Sparked a Technological Revolution. New York City: Smithsonian, 2010. Print. Sciencefairadventure.com. “Fruit Battery Power.” Sciencefairadventure. N.p., n.d. Web. 20 Oct. 2010. <http://www.sciencefairadventure.com/ProjectDetail.aspx?ProjectID=154>. VanCleave, Janice. Janice VanCleave's Electricity: Mind-boggling Experiments You Can Turn Into Science Fair Projects. N.p.: Willey, 1994. Print. You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.