Environmental Science Chapter 18 Review Essay

Chapters 18-1 & 18-2 ReviewSection 1 Review 1. argument six forms of renewable nil, and comp ar the advantages and disadvantages of each. Pros 1) hands-off solar arouseing whitethorn hold a great advantage for a homeowner if at that place is reliable sunlight that is able to shine into the home and create warmth. Also, it admit reduce life force bills in their liquid even when the sun is not shining.3) Wind origin is cheap, clean vim that is the average household. 2) Active solar heating systems have the advantage of storing heat in essentially complimentary once the infrastructure is paid for. 4) Biomass kindle is in abundant allow and rout out convert waste into aptitude.5) Hydroelectric zip may be expensive to build, but are inexpensive to operate. Unlike fossil fuel plants, hydroelectric dams do not release air pollutants into the atmosphere that set out acid precipitation. They similarly last longer than most other plants. 6) geothermic energy is almost enti rely emission free and can be built underground.Cons 1) Passive solar heating may only be seen as an effective use of power if the climate is able to provide enough sunlight. 2) Active solar heating plans are expensive and in most areas, an active solar system will be uneffective to capture enough sunlight to replace the heating and electrical systems in a house. 3) Wind power can be a failed energy source, for wind is inconsistent, unsteady and unpredictable. 4) Biomass fuel is costly to produce and needs a substructure of fossil fuel for production and use. It can result in habitat loss, deforestation, and harmful air pollution. 5) Hydroelectric energy is straightaway link up to how much piddle is available, thus potentially causing a drought. They also relate to interventions in nature due to damming of irrigate, changed water flow and the turn of roads and power lines. 6) Geothermal power is also expensive to produce and must be managed carefully so that it is not deplete d. 2. place the differences between passive solar heating, active solar heating, and photovoltaic energy. Passive solar energy uses the suns energy to heat something directly date active solar heating and photovoltaic energy uses energy from the sun that is gathered by collectors.3. take out how hydroelectric energy, geothermic energy, and geothermal energy pumps turn. Hydroelectric energy is produced by heating up water to produce steam, which then spins the turbines and generates electricity. Geothermal energy is created when steam rises through a well and confuses turbines, which generate electricity. The leftover liquid water is then pump back into the hot rock. Geothermal energy pumps are used so when the ground is warmer, the heat is transferred from the ground to warm the house and when the ground is cool, heat is transferred from the house to the ground to cool the house. 4. Explain whether all renewable energy sources have their origin in energy from the sun. Onl y a dinky fraction of the suns energy reaches the Earth. However, this energy is enough to power the wind, plant growth, and the water cycle. So nearly all renewable energy comes directly or indirectly from the sun.Section 2 Review 1. drag three alternative energy technologies, and identify two ways that hydrogen could be used as fuel source in the future. terce examples of alternative energy technologies are tidal power, ocean thermal energy conversion, and solar chimneys. Tidal power is when the tide rises, water flows behind a dam and when the tide falls, the water is trapped behind the damn. When water in the reservoir is released, it turns a turbine that generates electricity. OTEC is when warm surface water is brought to a boiling point in a vacuum chamber. The boiling water produces steam to drive a turbine that generates electricity. Solar chimneys use the greenhouse effect to produce despicable air that escapes through a central chimney where wind turbines make electr icity. Hydrogen can be burned as fuel, for it does not see to it carbon, so it does not release pollutants associated with burning fossil fuels and biomass. Hydrogen isotopes can also be used in a controlled nuclear conglutination reaction. 2. List as many ways as you can for individuals and communities to husband energy. Replacing light bulbs with new energy efficient models Adjusting the temperature of your home while away or sleeping Wash clothing with cold water Install low-flow showerheads and faucets Turning out lights in vacant rooms3. Describe the difference between energy conservation and energy aptitude. Energy efficiency is the percentage of energy put into a system that does useful work while energy conservation means saving energy.4. What factors allure a persons choice to conserve energy? Factors that may influence a persons choice to conserve energy are to help lower their energy bill and help the environment.