Bell Work SPI 0807.T/E.3 Intended Benefits and Unintended Consequences Which choice below is an unintended consequence of building a wind trubine to create electricity from the wind? A) less greenhouse gases in the atmosphere B) more electricity available for consumers C) polluting the water with hazardous chemical D) spinning turbine blades sometimes kill birds Science

Intended Purpose/Consequences: When a company designs a new product, they are addressing a need. (This is Step 1 of the engineering design process). This need is connected with and is essentially the same as the intended purpose. The intended purpose/benefit is what the engineers purposely include when designing some product or process. Notes SPI 0807.T/E.3 Intended Benefits and Unintended Consequences Science Example:  Cell phones -The need being addressed is communication. Likewise the intended purpose is more effective communication. What is the intended purpose/benefit? Another Example: Automotive Technology (cars and trucks)

Unintended consequences: …are uses or results that engineers DO NOT purposely include when designing some product or process. …these are things that WERE NOT part of the design plan. Notes SPI 0807.T/E.3 Intended Benefits and Unintended Consequences Science Example: Cell phones and Cars -One unintended consequence is wrecking your car while talking or texting while driving. Cell phones and cars were not designed to cause traffic accidents  Intended benefit -cell phones were designed for communication  Intended benefit -cars were designed for transportation

Intended benefit – something intended to happen Unintended consequence – a result that wasn’t planned

NOTE: Unintended consequences are not always negative. Sometimes they are very positive and beneficial Example: In WWII, engineers invented sonar to allow submarines to navigate underwater and to destroy enemy ships. Notes SPI 0807.T/E.3 Intended Benefits and Unintended Consequences Science Sonogram image (baby boy-7 months ) Sonogram image (baby girl-8 months) One positive unintended consequence is sonagrams (ultra-sound) for babies.

 Copy and fill in the concept map below Cars Intended? Unintended? Review SPI 0807.T/E.3 Intended Benefits and Unintended Consequences Science

 Copy and fill in the concept map below Video Games Intended? Unintended? Review SPI 0807.T/E.3 Intended Benefits and Unintended Consequences Science

a.The amount of fuel consumption would go down. b.Their would be a huge improvement in gas mileage. c.All the gas station owners would lose money. d.Conservation of fossil fuels would decrease. Currently the average fuel consumption per car in the United States is about 30 miles a gallon. If tomorrow engineers invented a new engine that changed the average fuel consumption rate per car to 100 miles a gallon, what would be one unintended consequence?