PUBH 6011 Midterm Exam Questions with Correct Answers

PUBH 6011 Midterm Exam Questions with Correct Answers Concentrating solar power - Answer-type of solar power that focuses the sun's energy to boil water and sends it through a traditional steam turbine Which form of energy was used more than any other until the 1960's? - Answer-coal Do traditional oil or shale oil have higher EROI? - Answer-traditional How much natural gas in the US comes from hydraulic fracturing? - Answer-66% What was the pre industrial concentration of CO2? - Answer-about 300 ppm US energy mix - Answer-1% oil 34% natural gas 6% hydroelectricity 30% coal 20% nuclear 0.4% geothermal 1% solar 6% wind Tar Sands - Answer-hurts forests and made regrowth difficult due to sterilized soil, water intensive process Mountaintop removal - Answer-lets metals leach into water and silica dust in the air overburden - Answer-top of mountain that is removed to reach coal Why are the earths rainforests at the equator? - Answer-Sun is hottest at equator and lifts air --> air cools as it lifts --> air is humid because of ocean --> air condenses as it cools and causes a lot of rain Macrophage (lung physiology) - Answer-find foreign particles in alveoli and digest them with lysosome packets asbestos effect on lungs - Answer-puncture macrophages and get glued to wall of lungs taking away gas exchange regions Mucocilliary elevator - Answer-cilia move mucus up and out of lungs (can clear PM 10 but not PM 2.5) located in upper tracheal bronchial tree six criteria air pollutants - Answer-all are from burning fossil fuels carbon monoxide lead nitrogen dioxide ozone particulate matter sulfur oxides