BIOL 1132 Exam 4

BIOL 1132 Exam 4 Biomass Types of Biomass - ANS-1. Fuel Wood 2. Crop Residue 3. Animal Manure 4. Energy Plantation Renewable Fuel Mandate - Biomass Conversion Techniques - ANS-1. DIrect Combustion (Burn wood or stalks) 2. Biofuels Production (make ethanol or biodiesal) 3. Anaerobic digestion (decomposition of biomass) 4. Pyrolysis ( Gasification, convert solid biomass to more useful fuel) Hydroelectric Power - Advantages - ANS-1. Renewable does not emit air pollutants 2. Clean energy Hydroelectric Power - Disadvantages - ANS-1. Large impact on environment displaces 2. People due to floods hight initial costs Hydroelectric power - Environmental Power - ANS-1. Flooding of vast areas can be too large 2. Alters watersheds 3. Alters migration 4. Patterns of fish cause bacterial build up in flooded areas which emits carbon dioxide Solar Energy - Passive Heating System - ANS-Trapping heat from the sun inside your home and using thermal mass, heat flow and insulation effectively to store, distribute, and retain the heat. What is active solar system - ANS-Use solar energy to heat a fluid (either air or liquid), and then transfer the solar heat directly to the interior space or to a storage system for later use. Advantage of Wind Power - ANS-1. Renewable 2. Not pollutant 3. Reduces fossil fuel use Disadvantages of Wind Power - ANS-1. Unpredictable threat to wildlife 2. Limited locations 3. Not aestically pleasing. Environmental concerns of wind power - ANS-1. Causes a lot of bird deaths 2. A Visual pollution Geothermal - ANS-1. One way is in geothermal active areas - inject water and collect steam to power turbine for electricity or heat radiators for heat 2. Heat pumps for non geothermally active areas Geothermal energy environmental concerns - ANS-1. Changes in land use 2. Noise and sight 3. Pollution discharge of water and gas What is tidal power - ANS-Renewable energy powered by the natural rise and fall of ocean tides and currents CONTINUES...