EnergyEnergyAn important natural resource An important natural resource (chapter 27)(chapter 27)

We already know…We already know…

Canada’s natural resources (fish, Canada’s natural resources (fish, agriculture, mining, forestry) provide agriculture, mining, forestry) provide products and jobsproducts and jobs

Some of these resources are Some of these resources are renewable, some are non-renewablerenewable, some are non-renewable

We must be careful how we use our We must be careful how we use our resources resources todaytoday, so that they are still , so that they are still available for use available for use tomorrowtomorrow

You may not know…You may not know…

Canada has a number of valuable Canada has a number of valuable energy resourcesenergy resources

Canadians are the largest users of Canadians are the largest users of energy in the world (per capita)energy in the world (per capita)

98% of our energy use comes from 98% of our energy use comes from non-renewable sources (fossil fuels)non-renewable sources (fossil fuels)

oil 39% natural gas 35% oil 39% natural gas 35% electricity 24%electricity 24%

CoalCoal

Coal formed from trees and plants that Coal formed from trees and plants that grew in swampy areas 350 MYAgrew in swampy areas 350 MYA

The plants never decayed; got trapped The plants never decayed; got trapped and compressed by layers of heavy rockand compressed by layers of heavy rock

The compressed material formed coalThe compressed material formed coal

Coal is burned for heat & fuel, and is used Coal is burned for heat & fuel, and is used to produce metalto produce metal

Coal mines in CanadaCoal mines in Canada

Oil & GasOil & Gas

Usually found togetherUsually found together

Formed from marine animals & plants Formed from marine animals & plants over 300 MYA when Canada was over 300 MYA when Canada was covered with watercovered with water

Compressed by layers of heavy rock, Compressed by layers of heavy rock, the decaying plants & animals were the decaying plants & animals were exposed to bacteria, heat, & pressureexposed to bacteria, heat, & pressure

Oil & Gas deposits are trapped in porous Oil & Gas deposits are trapped in porous rock (rock with small holes/pockets)rock (rock with small holes/pockets)

Why do the gas & oil Why do the gas & oil rise above the water?rise above the water?

Oil & Gas around the Oil & Gas around the globeglobe

ElectricityElectricity

How does this process How does this process start?start?

Hydro electricity – water moves from Hydro electricity – water moves from higher to lower elevationhigher to lower elevation

Thermo electricity – steam is produced Thermo electricity – steam is produced by burning fuel such as coal, oil, by burning fuel such as coal, oil, natural gas, wood, or garbagenatural gas, wood, or garbage

Nuclear electricity – steam is produced Nuclear electricity – steam is produced from the breakdown of radioactive from the breakdown of radioactive uranium atomsuranium atoms

Let’s ReviewLet’s Review

Canada has valuable energy Canada has valuable energy resources:resources:

CoalCoalOilOilNatural GasNatural GasElectricityElectricity

The BIG question…The BIG question…

What happens when What happens when all of these non-all of these non-

renewable energy renewable energy sources sources

run outrun out??