Technological Impacts

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08 DEC 08
DRILL

• Copy tonights homework
• On a separate sheet of paper, define the
  following
• Combustion, Compression, Conservation, Energy,
  Essay, Force, Fuel, Kinetic Energy, Municipal,
  Potential Energy, Power, Power Plant, Pressure,
  Propulsion, Renewable, Rudimentary,
  Thermodynamics, Vector, Volatile, Work

LETTER
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Unit 2 Completion
Main Ideas

• Communication technology significantly impacts
  the way we live.
• Information is an essential resource for design
  (e.g., Drafting, AutoCAD and Sketchup)
• Technology has changed the nature of
  communication in our society (evidenced by the
  chronology of communication technology).

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Unit 2 Completion

• Goals
• Inform Persuade Entertain Control
  Manage Educate
• Inputs
• Source of Communication
• Processes
• Encoder Transmitter Receiver Decoder
  Storage Retrieval
• Outputs
• Message to the destination
• Feedback and Control
• Reversing the communication line

Not always
4
Unit 2 Completion

• Timeline Projects
• Majority of timelines failed to meet minimum
  requirements.
• Grades will be included on 2nd quarter report
  card.
• Option 1 timeline graded as is
• Option 2 come to coach class, get feedback on
  how you could improve your timeline, and resubmit
  the assignment (due Monday 12/15)

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Impacts Journals

• Bi-weekly Essay Assignments
• Purpose further develop reading, writing, and
  technological literacy skills
• Assignment
• Visit the Assignments section of the class
  website.
• Read assignment instructions AND FOLLOW THEM.
• Visit online articles.
• Type thorough answers to questions, print your
  answers, and bring in ON DUE DATE.

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Impacts Journals

1. Go to www.bpi.edu
2. Click Classes Homework
3. Click Engineering
4. Click Impacts of Technology
5. Scroll all the way down and click See Homework

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Impacts Journals

• Bi-weekly Essay Assignments
• On the Website
• Assignment details
• Scoring rubric
• Links to articles
• Sample responses
• (Beware of grammar, formatting, instructions, and
  language)
• USE the resources given to you!

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Impacts Journals

• Bi-weekly Essay Assignments
• Due Dates
• Every other Monday between now and the end of the
  3rd quarter, beginning next Monday.
• Follow online instructions carefully some weeks
  require the completion of 2 articles.
• December 15th (next Monday) and January 5th are
  the first two due dates.
• Reminders in class are not likely.

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UNIT 3
UNIT 3 ENERGY AND POWER
Topics Covered

• Energy Sources Fuels and Power Plants
• Classical Mechanics
• Force, Work, Energy, and Power
• Trigonometry and Vectors
• Energy and Power
• Impacts of Current Generation and Use

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UNIT 3 ENERGY AND POWERTopic 1 Energy Sources
Power Plants and Fuels
FUEL a material used to produce heat or
power Most of the following are power plants
what is the fuel shown/used in each image?
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Topic 1 Energy Sources Fuels
Why a watermark of the Sun? The Sun is the
source of all energy on Earth.
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Topic 1 Energy Sources Fuels
Fuels and Energy

• Energy is NOT fuel used for transportation and
  heating, for lights and appliances, and foods for
  consumption.
• FUEL ENERGY
• Fuels are a source of energy.
• Fuels are the material source of energy,
  containing it as a potential.

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Topic 1 Energy Sources Fuels
Fuel Types

• Non-renewable
• Fossil Fuels
• Coal, Natural Gas, Petroleum (Oil)
• Nuclear Uranium ore
• Renewable
• Biofuels, Biomass, Geothermal, Hydro, Solar,
  Tidal, Wave, Wind

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Non-Renewable Fuels Fossil Fuels

1. Fossil fuels are burned to release stored energy.
2. Formed from the heated and pressurized remains of
   dead plant and animal life over hundreds of
   millions of years.
3. Non-renewable millions of years to form and
   reserves are being depleted faster than new ones
   are being formed.
4. Volatile natural gas and petroleum
5. Nonvolatile coal

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Non-Renewable Fuels Coal

1. Coal is formed from the remains of terrestrial
   plants that died around 350 million years ago.
2. Plant remains preserved in water and mud.

Heat and Pressure
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Non-Renewable Fuels Coal

1. 4,000 B.C.E. China carved ornaments
2. 2,000 B.C.E. funeral pyres in Britain
3. 1,200s C.E. underground mining developed

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Non-Renewable Fuels Coal

• History of Extraction and Use
• Colliery (COLL-yer-ee) a coal mine and its
  connected buildings.
• Coal must be cleaned and refined (improved) after
  extraction
• South Wales, Great Britain oldest known
  colliery.
• First commercial coal mining in U.S. in 1730s,
  VA.
• Prior to 1880s, coal was picked by hand
  underground.
• By 1912, surface mining was used.

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Non-Renewable Fuels Coal

• Methods of Extraction
• Underground Mining
• 60 of world production
• 33 of U.S. mining
• Uses timber for support tunnel
• Machines enter and extract coal
• Surface (Strip) Mining
• More coal extracted than underground mining
• Exposes coal by removing land above deposits

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Non-Renewable Fuels Coal

• Uses
• Coal is mostly used as a solid fuel to produce
  electricity and heat through combustion.
• It is usually pulverized (crushed into small
  particles) then burned in a furnace for
  electricity generation at a power plant.
• 40 of worlds electricity comes from coal
• 49 of U.S. electricity comes from coal