45 terms

Renewable Energy Test

wind turbine
Mechanical energy (wind) to electricity
Pros of Wind Turbines
Least expensive alternate energy
No carbon emission
Once tower is up, almost no cost to maintain
What country leads the world in wind energy generating?
Wind Power
Radiant energy from the sun heats Earth and atmosphere
Day Winds
air is heated from ground, warm air flows upward, cold air replaces it
Night Winds
air cools more quickly over land than water
Atmospheric Wind
Air heated more from ground near equator
Cons of Wind Energy
High start-up cost

Energy companies see it as a supplemental power

Strong winds usually not near population
Energy grids are not set up for wind
Tidal Energy
Energy that can be obtained from movement of water due to gravitational pull of sun, moon, and Earth's rotation.
Pros of Tidal Energy
It's reliable and consistent
It gives off very little pollution
Lessen the burden of fossil fuels and nuclear energy!
Cons of Tidal Energy
Environmental Impact
High startup cost
Low efficiency in some cases
Solar Energy from the Sun is converted to...
Heat and Electricity
Cons of Solar Energy
Secondary Pollution (Toxic materials and alcohols
Blocking the sun for some animals
No direct pollution though!)
Bird death ray
Startup cost
Geothermal Energy
Heat is recovered as steam or hot water to:
1. Create electricity
2. Heat buildings
Geothermal Reservoirs-
pockets of hot water or steam underground
Cons of Geothermal Energy
Release less than 1% of CO2
Hydrogen Sulfide pollution
97% less acid rain pollutants
Sources of geothermal are often National Treasures
Renewable Energy Source
Replenish themselves or are continuously present
Nonrenewable Energy Source
Finite supply being used faster than they can be replenished
Naturally occurring substance that can potentially be extracted using modern technology
Known deposits which can be extracted from profitably using modern technology under certain economic conditions
lowest rank of coal
most used renewable resource in the United States
where the most Geothermal Energy is produced in all of the United States
tidal range
the difference between low and high tide. the height difference.
produces electricity and heat
3 things that increase volity of coal
rance river estuary
barrage dam
renewable energy
energy resource that can replenish itself
anaerobic digestion
bacteria breaks biomass down without oxygen with product mixed gas. LFG's
compact biomass with high temperatures, increading the VED
direct combustion
just burning biomass
burning to get heat and electricity
solid to liquid biomass with chemistry and heat
same as pyrolysis BUT, more heat and less gas
ethanol production
bacteria ferment BM with sugars
burning wood
solid waste
burning "rubbish."
fossil fuels
most used energy source in the united states
volumetric energy density---- increased by pelletisation
Other names for the "rank" of coal
Hardness, volatility
2 ways to harvest solar energy
photovoltaic (PV) devices or Solar Energy Plant
acid mine drainage
acidic precursors from coal mines get into surrounding water sources due to rain flushing them out
shifting of ground as a result of drilling/mining under it
secondary recovery
pumping water into an oil well to increase pressure and improve recovery
liquefied natural gas
natural gas that is super cooled to gas phase so it can be transported easier/safer