Operation iPod An Interactive Tour by Allen Li and Robert Spencer-Molloy Let’s begin!
We’ll be looking inside the second-generation iPod touch. A note on presumed obsolescence: the newest iPods are often the most wanted “tech toys” in the consumer market, and therefore people naturally seem to want the newest and greatest.
Welcome to iQuest! This “program” will have interactive buttons for potential answers to questions. If you click the correct answer, the screen will change. If not, you will hear a “bomb” sound! Let’s go! Click on the button…
Major Components of an iPod touch CasingSilicon Chips BatteryScreen Click any button above to view information! OR Click anywhere to take the iQuest interactive quiz!
The Casing The casing is made of stainless steel, an alloy formed from iron, nickel, and chromium. Also, other elements, such as nitrogen and manganese may be added. These elements can be found almost everywhere on Earth.
Making the Casing First, the raw materials are melted down in a furnace. Then, it is cast in molds to be the shape of slabs. Afterwards, the metal is rolled into thin sheets, which are heat-treated.
Forming the Casing The heat-treated steel is then cut into the shape of the casing. They are then packaged and shipped to Apple Corp.’s factories for assembly.
Pollution of Stainless Steel Pollution of stainless steel is significant. This is because the mining and manufacturing creates a large amount of air pollution in the form of carbon dioxide and other greenhouse gases. Also, much waste heat is discharged.
The Silicon Chips and CPU The silicon chips are actually printed circuit boards, composed primarily of the element silicon (Si).
Silicon High-grade silicon that is used for circuitry is converted from the silica in sand, found in the United States. Silica and carbon are melted together in a furnace to rid it of oxygen. Then, it is ground up and exposed to gaseous HCl to form a liquid compound called trichlorosilane.
Forming Pure Silicon The trichlorosilane is then vaporized and exposed to hydrogen gas at high temperatures to form a cylinder, which is then purified even further.
Forming the Processor The silicon is then cut into thin wafers, which then are exposed to either chemicals or rays to form the final chip, which resides on an insulated board.
Silicon and Pollution Since the silica is often mined, such mining produces air pollution in the form of exhaust gases, as well as water and solid waste pollution. Silicon production also creates considerable amounts of liquid pollutants from the extraction of pure silicon.
The Battery The battery of an iPod is a lithium- ion battery As you can guess, the primary component is the element lithium.
Extracting Lithium Most Lithium compound reserves are found in Chile. Pure lithium is produced by the electrolysis of lithium chloride, which is a byproduct of KCl production.
Lithium and Pollution Salt flats that produce lithium do not pollute the environment themselves, but however, they use small amounts of electricity, which may come from polluting sources. A small minority of lithium is mined, which makes a slight contribution to water, air, and solid waste pollution.
The Touch Screen The outer layer of the capacitative touch screen is made of glass. Glass is made from a mixture of sand, limestone, and sodium carbonate. Germany, the U.S., and Japan are leading exporters of glass.
Making Glass The ingredients are melted in a furnace. After melting, the hot mixture is floated on a bath of molten tin to make the surface flat and smooth. Then, it is anealed to give the glass uniform thickness and a reflective surface.
Glassmaking and Pollution The major environmental impact from glass production is the emission of carbon dioxide. On the local level, production can also create air pollution, small amounts of water pollution, and noise pollution. However, glass is fully recyclable.
1. Where can you find major deposits of lithium compounds? SwazilandChile DenmarkUnited States
2. What is the primary material in glass? Sodium carbonateLimestone SandPolyurethane
3. What is the main environmental impact of stainless steel production? Air pollutionWater pollution Solid wasteNoise pollution
4. What is a liquid compound of silicon? Hydrogen sulfideTrichlorosilicate DichlorosilaneTrichlorosilane
5. How much profit does Apple make for each 8 GB iPod touch sold? About $25About $50 About $75About $100
Thanks for completing Operation iPod with us! Start OverFinishWorks Cited
Economy Statistics > World Trade > Exports > Glass (most recent) by country.” Chart. NationMaster. N.p., 2010. Web. 3 June 2010.. “Glass Production.” Wikipedia. N.p., 6 May 2010. Web. 3 June 2010.. International Lithium Alliance. “Frequently Asked Questions about Lithium.” International Lithium Alliance. N.p., n.d. Web. 3 June 2010.. Koerner, Brendan I. “The Saudi Arabia of Lithium.” Forbes. N.p., 30 Oct. 2008. Web. 3 June 2010.. “Lithium Process.” SQM. N.p., n.d. Web. 3 June 2010.. Marshall Cavendish Corporation. “Glass.” How It Works. N. pag. Marshall Cavendish Digital. N.p., 2010. Web. 3 June 2010.. United States of America. United States Geological Survey. “World Mine Production and Reserves.” LITHIUM. By Brian W. Jaskula. 2. USGS. N.p., Jan. 2010. Web. 3 June 2010.. Graham, Ian, Barbara Taylor, and John Farndon. Science Encyclopedia. Ed. Miles Kelly. 2nd ed. 1999. Bath: Parragon, 2002. Print. Millberg, L.S. “Stainless Steel.” How Products Are Made. MadeHow, 2010. Web. 1 June 2010.. PC Plus. “How Silicon Chips Are Made.” PC Plus. Techradar, 21 May 2009. Web. 3 June 2010.. RapidRepair. “iPod Touch 2G Repair Guide.” Rapid Repair Guides. RapidRepair, 2004-2009. Web. 1 June 2010.. Go Back