LUOA Earth Science 3.9.R quiz 9 100% Correct

LUOA Earth Science 3.9.R quiz 9 100% Correct coal a problematic power source because it has high CO2 emissions when it is burned and because it is a severe threat to human health two advantages of nuclear power a high energy net yield a low risk of accidents with current technology conventional oil high energy net yield; a very controversial source of energy 500 years how long the coal on earth will last us recyle a viable solution we can all adopt to fix our non-renewable recource problem water and wind power generate electricity by turning turbines and generators 3 advantages of using biomass as fuel it can make use of agricultural and urban waste products plantations can help restore lands that are degraded it has a large potential in some areas Hydropower main leading source of renewable energy solar power the best free energy source synthetic fuels man-made energy sources 2 benefits of using geothermal energy it has lower CO2 emissions than fossil fuels it is very efficient underground caves form from water seeping down, forming carbonic acid, and dissolving the limestone acid rain a form of chemical weathering limestone would be weathered in moist environments carbonic acid a weak acid that occurs naturally weathering the changing of rocks at the Eaarth's surface due to exposure to certain variables exfoliation the process by which piece of rock flake off 3 reasons giant piles of rocks form they experience ice wedging they get cracks from freeze-thaw cycles clay minerals in the rock wash away Biological Pressure begins when lichen or moss grow on rocks 10% how much water expands when it freezes