6 Energy and the Environment

6 Energy and the Environment - Energy and the Environment...

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Energy and the Environment Chapter 7 Canada’s Charter of Rights guarantees our basic rights: free speech, freedom from discrimination, freedom of worship, freedom of assembly. Not covered under the Charter is our right to clear air, water and fruits of the earth without being poisoned Threats to our survival: UV readings, thinning of the ozone layer, toxic waste (PCBs and dioxins), Carbon dioxide emissions During the industrial revolution coal was burned which released high levels of carbon dioxide
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Types of Energy Sources Fossil Fuels – Petroleum, coal, natural gas Renewable energy – Hydro-electric, solar, biomass, wind, geothermal Nuclear – Fission, fusion
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Hydroelectricity Also known as “white coal” when it was used to power Niagara Falls generators in 1910 Cleaner energy source than coal Post World War 11, oil was cheap and abundant and was used in transportation Similar to coal, this fossil fuel releases carbon dioxide and accelerates climate change At the rate of current consumption of oil it will run out in 40 years Natural gas is cheaper and is the fastest growing energy source and produces half the carbon dioxide than equivalent amounts of coal does
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Current oil reserves The world has oil reserves (73 million barrels per day) which will last 40 years If the demand increases by 2% annually, as predicted by the U.S. Department of Energy it will supply the world for only 25 years despite new oil deposits being discovered. Iraq has a 10th of these reserves
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Saudi Arabia has 25% of the world’s oil The US depends on imported petroleum Canada is a petroleum exporter and supplies the U.S. as well Canada emits more carbon dioxide per capita than most industrial countries (16.2 tonnes per person per year)
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Social Issue The kind of energy we use and how it affects our environment Who makes decisions regarding our resources
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The environment Self-healing system Humans share the environment with animals and plants Ecology is concerned with “the relationship between plants and animals and the environment in which they live.” Everything is connected (food chain) All creatures are linked to the
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SUVs Ads aimed at selling this vehicle to customers who live in the suburbs but wanted a vehicle that made them feel carefree, bold and brave unlike the mini van Ads: “give you the courage to scale the Andes” The SUV makers are made by powerful corporations They fail to mention to the consumer the carbon dioxide emissions of these vehicles (twice that of cars) General Motors (by 2002) had converted 8 of its 24 North American assembly plants to make SUVs
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Canadian cities Many commuters from suburbs drive into the city each day Families have homes with 2 or more garages for their vehicles Public Transit not available outside the city to the
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6 Energy and the Environment - Energy and the Environment...

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