Energies

Energies

1. RENOWABLE

   • hydroelectris dams
     • definition
       • A hydroelectric dam is one of the major components of a hydroelectric facility. A dam is a large, man-made structure built to contain some body of water.
     • disadvantages
       • The construction of dams has a large environmental impact: it can alter aquatic habitat, flood previously dry areas, may require the expropriation of land, leading to the relocation of local communities, changes in water quality, etc.
     • Advantages
       • Hydropower is a renewable source of energy. The energy generated through hydropower relies on the water cycle, which is driven by the sun, making it renewable.
   • solar power
     • definition
       • contain photons) hit one semiconductor, the electrThese technology transforms ultraviolet sunlight into electricity by using two semiconductor materials. When the photon (light ons jump to the other semiconducto. These movement produce electricity.
     • disadvantages
       • The solar cells are very expensive. We can use them on little electrical units that require not many electricity or in mobile units. for example: calculators, parking meters, road signs, satellites… We need to remember that electricity is difficult and expensive to be collected.
     • avdantages
       • educes electricity bills Low maintenance Renewable energy Energy independence Sustainability Increase home value Solar panels are getting cheaper How is solar energy obtained? Diverse applications
   • Wind power
     • definition
       • Its pollution seeps into water, land, and through cracks and crevices, increasing the risk of asthma, heart disease, and cancer, and causing the premature deaths of thousands of people each year.
       • disavantages
         • On of their disadvantages is the environmental impact of wind, turbines, which can cause noise problems for locals inhabitants.
         • advantages
           • It is a renewable energy, source does not pollute , is inexhaustible and reduces the use os fossil fuels.

2. NON RENOWABLE

   • nuclear power
     • definition
       • Nuclear energy is a form of energy released from the nucleus, the core of atoms, made up of protons.
     • disadvantages
       • Nuclear energy produces radioactive waste A major environmental concern related to nuclear power is the creation of radioactive wastes such as uranium mill tailings, spent (used) reactor fuel, and other radioactive wastes. These materials can remain radioactive and dangerous to human health for thousands of years.
     • Advantages
       • Nuclear is a zero-emission clean energy source. ... Despite producing massive amounts of carbon-free power, nuclear energy produces more electricity on less land than any other clean-air source. ... Nuclear fuel is extremely dense.
   • Crude oil
     • definition
       • Crude oil means a mixture of hydrocarbons that exists in liquid phase in natural underground reservoirs and remains liquid at atmospheric pressure after passing through surface separating facilities.
     • disavantages
       • Pollution Oil spills Global warming Emissions Water pollution Dangerous to produce Disruption of wildlife behavior Fossil fuels are nonrenewable Local air pollution
     • avantages
       • The importance of crude oil cannot be overstated. It is a major source of energy, generating heat and powering various types of vehicles and machinery. It is also used as a component in many of the products that we use every day, including plastics, paints, and cosmetics.
   • coal
     • definition
       • It is a black sedimentary rock, very rich in carbon and with variable amounts of other elements such as hydrogen, sulfur, oxygen and nitrogen. It burns easily and is one of the most widely used fossil fuels.
         • advantages
           • Carbon helps regulate Earth's temperature, makes life possible, is a key ingredient in the food that sustains us, and provides an important source of energy to power our global economy.
             • disavantages
               • Its pollution seeps into water, land, and through cracks and crevices, increasing the risk of asthma, heart disease, and cancer, and causing the premature deaths of thousands of people each year.
   • Natural gas
     • definition
       • NATURAL GAS WAS FORMED MILLIONS OF YEARS AGO, OFTEN WITH CRUDE OIL OR COAL. A GAS, WE FIND IT AT THE TOP OF THE CRUDE OIL.NATURAL GAS = METHANE natural gas into the boiler. The natural gas is burned and the heat produces steam. The steam turbine transforms heat into movement . The steam turbine moves a generator, and it transforms movement into electricity
     • avantages
       • WE USE IT FOR ELECTRICITY GENERATION AND FOR RESIDENTIAL HEATING. IS CHEAP RELATIVE CLEAN, BECAUSE OF THE THREE FOSSIL FUELS, NATURAL GAS PRODUCES THE LEAST AMOUNT OF CARBON DIOXIDE WHEN WE BURN IT.
     • disavantages
       • ALSO IT DOESN’T CONTAIN SULPHUR, SO IT DOESN’T PRODUCE SULPHUR OXIDES. IS DIFFICULT TO STORE IS DIFFICULT TO TRANSPORT, SO UNTIL 1980’s WE LIQUEFIED AND IN THIS WAY WE CAN TRANSPORT IT BY SHIPS OR ALONG GAS PIPES.