1 / 14

Gold

Gold. Michelle Yeager & Alyson Mcmurtrie. Uses of Gold. Most useful type of metal H as many different uses in the United States including: Jewelry Electronics Computers Financial Dentistry Medical Aerospace and many more!. Primary Use of Gold: Jewelry .

kaori
Download Presentation

Gold

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Gold Michelle Yeager & Alyson Mcmurtrie

  2. Uses of Gold • Most useful type of metal • Has many different uses in the United States including: • Jewelry • Electronics • Computers • Financial • Dentistry • Medical • Aerospace and many more!

  3. Primary Use of Gold: Jewelry • Used to make jewelry for thousands of years • Today, most of gold that is newly mined or recycled is used to make jewelry • Some special properties of gold that make it helpful for manufacturing jewelry are: • very high luster • desirable yellow color • tarnish resistance • hammered into sheets or cast into shapes

  4. Computers • The rapid transmission of digital information through the computer requires an efficient and reliable conductor • Gold meets these requirements and is better than any other metal • The gold in these components is: • generally electroplated onto other metals • alloyed with small amounts of nickel or cobalt to increase durability

  5. Electronics • Most important industrial use of gold is in in the manufacture of electronics • Gold is a highly efficient and reliable conductor that can carry tiny currents and remain free of corrosion • Gold is in: • cell phones, calculators, personal digital assistants, global positioning system units, and other small electronic devices, and even larger items like television sets

  6. Financial Uses • Used as an exchange for money • Has a long term value because it’s rare, useful, and desirable • Works well because it has a high value, is durable, and portable • The United States once used a "gold standard" and maintained a stockpile of goldto back every dollar up in circulation • Any person could present paper currency to the government and demand in exchange an equal value of gold

  7. Dentistry • Known to have been used in dentistry as early as 700 B.C. • Gold is used because of it’s great performance and beautiful appeal • - Gold is used for fillings, crowns, and orthodontic appliances • - Is used in dentistry because it’s non allergenic and can be easy for the dentist to work with

  8. Medical • Used as a drug to treat a small number of medical conditions • Particles of a radioactive gold isotopes are implanted in tissues to serve as a radiation source in the treatment of certain cancers • Many surgical instruments, electronic equipment and life-support devices are made using small amounts of gold

  9. Aerospace • Used in hundreds of ways in every space vehicle that NASA launches • Very dependable and reliable • Used in electrical systems and many parts of every space vehicle are fitted with gold-coated polyester films • This film reflects infrared radiation and helps stabilize the temperature of the spacecraft

  10. Environmental Consequences • Biggest environmental concern is toxic mine drainage • When rocks that have been buried for a long time, are dug up, air and moisture can set off chemical reactions that produce acids • If substances like sulfuric acid, arsenic, or copper, run off into lakes, rivers, and streams, they could cause serious risks for populations of fish and other organisms • Cyanide solution • is a poison to people, animals, and fish • is used when cleaning gold • Open-pit mines • produce a lot of dust, which is harmful to the people living near it

  11. Cultural Consequences • Indigenous people, farmers, and other local communities are trying to speak out to protect their lives and communities from the impacts of potentially harmful mining operations • Public health is at danger • Water and air pollution • No traditional way of living • Large open-pit mines can cause people to have to move and they might not have enough money to go anywhere else

  12. What is the Industry Doing? • Bills have been filed that would prohibit surface mining in the Sewanee coal seam, which is the most toxic coal seam east of the Mississippi • The industry continues to search for cost-effective and environmentally friendly alternatives to cyanide • Local communities around the world that are being affected by this are demanding that mining projects only go forward with their approval

  13. What Students Think • Gold mining should be done in an eco friendly environment • Should be done where there are no people around • The government should control how much gold is allowed to be mined at one time

  14. Works Cited • "Early Gold Mining Methods." Early Gold Mining Methods. Web. 26 Sept. 2012. <http://www.sierrafoothillmagazine.com/goldmethods.html>. • "Gold Historical Background." Gold History.Web. 24 Sept. 2012. <http://bullion.nwtmint.com/gold_history.php>. • "The Many Uses of Gold." Uses of Gold in Industry, Medicine, Computers, Electronics, Jewelry. Web. 24 Sept. 2012. <http://geology.com/minerals/gold/uses-of-gold.shtml>. • "Mining Distributors." Is Gold Mining Bad for the Environment?Web. 24 Sept. 2012. <http://www.miningdistributors.com/knowledgebase/gold-mining-bad-for-the-environment.php>. • "No Dirty Gold." No Dirty Gold.Web. 24 Sept. 2012. <http://www.nodirtygold.org/poisoned_waters.cfm>.

More Related