TYPES OF RESOURCES
Renewable Resource: a resource that can be replaced in nature at a rate close to its rate of use
LIFE CYCLE OF COAL peat: mainly decaying twigs and
leaveslignite: soft, brown coalbituminous: soft coal (good
energy source, pollutes the air)anthracite: hard coal; cleanest
burning
Building – produces plastics, fabrics, synthetic vitamins, shampoos, makeup, and much more.
Uses of PetroleumBurning – heating,
transportation, generating electricity
Environmental Impact of processing of petroleum:
Possible transportation accidents
Offshore drilling rig accidents
Energy used in pumping and refining causes pollution
Final burning releases CO and CO2 into air
Global warming? Air pollution
Availability of Fossil Fuels...
In many cases, the countries that consume large amounts of fossil fuels have very limited reserves of their own.
Alternative Sources of Energy
• Hydroelectric Power• Solar Energy• Wind Power• Geothermal Energy• Biomass Fuels• Nuclear Energy
Hydroelectric Power• definition- electricity
produced by flowing water
• pressure from water turns a turbine and powers electric generators
Provides a steady source of energy
Very efficient
Most widely used renewable energy source used today
How Hydroelectric Works how it works
Solar Energy Definition -
energy from the sun
Solar Cells - a.k.a. photovoltaic cells, convert solar energy into electricity
Types of Solar Heating Systems
Passive System - converts sunlight into thermal energy without using pumps or fans
Active System - captures the sun’s energy, then uses fans and pumps to distribute heat.
Did you know?In one day, Earth receives enough solar energy to meet the energy needs of the entire world for 40 years.
Wind Power definition: wind is used to
turn a turbine and generate electricity
“Wind farms” generate large amounts of electricity
Currently less than 1% of the world’s electricity comes from wind power
Geothermal Energy definition: heat from
the interior of the Earth
Can be in the form of water or steam