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Remarkable Resources Natural Resources • something that is found in nature and is necessary or useful to humans • Ex.: trees, minerals, water 2 categories: _Non-renewable resources: • are used faster than they can be replaced naturally _Renewable resources_: • can be replaced by natural processes in a relatively short amount of time –These include inexhaustible resources such as solar, geothermal, and wind Types of Nonrenewable Energy: _Fossil Fuels__________ • Coal • Oil • Natural gas 2.Nuclear energy (uranium) Types of Renewable Energy Solar Wind Water Geothermal Biomass Nonrenewable Resources _Fossil fuels_: coal, oil (AKA petroleum), and natural gas • formed from remains of prehistoric organisms • type of fuel made depends on: – type of organisms – where they got buried – how long they were buried 2._Nuclear energy_: • Energy released from atomic reactions • Uranium atoms are “split” making energy to produce steam, turning turbine to create electricity. Renewable Resources _Solar energy: sun’s rays • solar cells capture sunlight and transfer energy into useable form for electricity and heating H2O. 2._Wind energy: • wind turns turbines (large windmills) which use a motor to convert into electricity • Mainly used near coast and prairies 3._Water (hydro) energy: produces energy 2 ways: _Hydroelectric _power- a dam is built across a river of fast flowing water. __Tidal power-areas with big difference in hi and low tides; as H2O crosses turbine, it makes power 4. _Geothermal Energy: • uses heat from within earth • thermal energy makes steam to turn drills/turbines to make electricity Advantages-little pollution, available Disadvantages-limited to tectonic areas, habitat disruption from drilling 5. _Biomass energy _: • energy produced by burning organic matter (plant material, animal wastes) • can be made into fuel for vehicles