2. Learning Intentions
• To understand and reflect on environmental and social
impacts that the development of technology has on society
in Scotland and World Wide.
• To calculate the cost of how much three PCs would cost to
run for a year.
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3. The Facts
• Around 7 billion people on the planet.
• 325 million computers have been sold worldwide in 2010.
• 48 million TV sets sold world wide each day.
• 30 million mobile phones sold every year.
• United Nations stated there are 6 billion mobile phone
subscriptions world wide.
• ( But only 4.2 billion own a toothbrush.)
• 2 billion internet users world wide.
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4. What does technology do to the environment?
Work in table groups and create a mind map:
• What are the negative effects technology has on the
environment. You have 5 minutes
5. • What are the positive effects technology has on the environment.
You have 5 minutes
6. Carbon Footprint
• Computer systems contribute about 2% of global greenhouse
gas emissions.
• This is nearly the same amount as the airline industry.
• It is estimated that spending a minute on the internet and create
1.2 grams of CO2 emissions.
• This is the same amount as driving a Kilometre in a modern, fuel
efficient car.
7. Technology life cycle
Sent to Sent to stores
manufacturers
Chemicals and Technology is
Materials are built. Consumer
mined and buys
gathered. product
(maybe
two)
Products
thrown away
and
consumer Within two years
buys new
product product is obsolete
8. E-Waste
• Most old computer hardware that is supposed to be “recycled” but
are actually shipped off to developing countries and scraped by
impoverished workers. ( This also includes the use of child labour.)
• In the UK alone, at least 23,000 metric tonnes of undeclared or
'grey' market electronic waste was illegally shipped in 2003 to the
Far East, India, Africa and China.
9. Carbon Footprint – Is there a positive?
• On-Board computers in cars help the driver reduce fuel
consumption.
• Smart meters and sensors that are attached to networks and
help turn off electrical appliances and adjusting lighting to
save energy.
• Video conferencing can provide world wide meetings without
anyone having to leave their offices.
• Computer systems and cloud computing helps prevent the
destruction of forest by reducing paper.
10. Energy Use
• Our computers use up lots of energy!
• An average desktop PC can use around 140 watts.
• A high spec, Alienware, gaming PC can use up to 856 watts!
11. How much does that cost me?
Forrester energy company charges 0.01p per watt hour for our energy
Power the computer uses = _______ Watts
Energy used for a full day = ________ Watts X 24 hours = ________ Watt Hours
Energy used for whole year = ______ Watt Hours x 365 days = ________ Watt Hours
Cost for the year = _________ Watt Hours X 0.01p = £ __________
12. Task 1 – How much does it cost?
Go to the website www.dabs.com
Find three PCs / Laptops (low, medium and high spec) and tell me the
following information:
• Name of the PC / Laptop,
• Picture of the PC / Laptop ,
• Price of the PC / Laptop,
• Hard drive capacity,
• Memory ,
• Power (Watts),
• Amount of energy it will use if it ran continuously for a year,
• Amount it will cost to run for the year if it costs 0.01p per Watt Hour.
13. Task 2 – What can I do to help?
You are to create an android app or a piece of software that
will help the use to do one of the following things:
• Calculate the cost of a new pc to run each day / year
• To provide information about how technology effect the
environment.
Use the worksheet to help you.
14. Success Criteria
• I can discuss the impact that technology has on society and
the environment.
• I can calculate the cost of running a PC for a whole year.
14 July 22, 2012 Footer text here
