talked again about how the semester test is going to go down, and what we should be talking about for each topic and about how long it really needs to be.
did our presentation and Ashtun and Tara did theirs on pollution:
-types of pollution are: Air, water, noise, radioactive, and land pollution
-causes: car exhaust, factories, air, heat, oil spills, runoff
-effects: bad health, polluted water, and smog
-countries with pollution problems: China, US, Russia, and India
-solutions: recycling and renewable energy sources
-alternative energy source types: wind, nuclear, geothermal, hydroelectric, solar, and biofuels
Leading Countries with alternative energy sources:
-Wind: Texas, Iowa, and California--cons: birds and bats are killed in blades, lots of noise
-Nuclear: Fusion, Fission, and largest source of electricity--concerns: not safe, can have health effects, nuclear waste
-Hydroelectricity-prevents flooding, 20% of the world's electricity, least expensive, doesn't pollute--concerns: turbines can kill fish, can kill or harm species, can destroy land around a dam
-Dependence on Fossil Fuels, Pollution, and Alternative energy sources
-Types: natural gas, oil, coal, and petroleum
-things to decrease the usage: hybrid cars, using less water, reduce-reuse-recycle, turning things off when not in use
-problems with fossil fuels: when we burn fossil fuels we release poisonous gases into the atmosphere
-fossil fuels don't replenish themselves, so we will eventually run out
then we went to ours.....and i think it went really well!! i think we got a good score too.
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