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Vocab
wind
solar
water
all others
100
an energy source that is replaced by natural processes faster than it used. 
renewable resource 
100
These can use the energy of the wind to generate electricity.
what is windmills
100
energy from the sun is converted into electrical energy by what type of cell
photovoltaic cell 
100
what is it called when energy is made from water
hydroelectricity  
100
the oldest renewable energy source is 
biomass
200
renewable organic matter from plants and animals such as wood and animal manure, that can be burned to provide thermal energy
biomass
200
wind spins a propeller that is connected to an 
what is an electric generator 
200
solar cells are made out of how many semiconductor materials?
two one which is rich in electrons and the other which is poor in electrons
200
how does hydroelectricity makes energy

Rushing water spins a turbine, which rotates the shaft of an electric generator to produce electricity.


200
what are two fuel sources outside of gas and diesel we discussed 
solar cars, electric cars and hydrogen gas cars 
300
the total number of individuals of one species occupying the same area.
population 
300
does all places on earth have consistently enough wind to rely on wind power to meet energy needs.
no 
300
what type of areas are more likely to use solar energy 
developing countries or places where electrical distribution lines are not readily available 
300
how much of the united states energy is produced by hydroelectricity.
8 percent 
300
does hydrogen gas produce any pollution 
no it produces water vapor 
400
water with a pH lower than 5.6 that falls to earth as rain or snow and can harm plants and animals and corrode buildings.
acid rain
400
how efficient are windmills on producing energy 
about 20 percent 
400
where is the most concentration goes when it comes to improving solar power
into the receiver one of the best is called the  parabolic trough 
400
is energy made from the power plants using hydroelectricity expensive
no the electricity is relatively cheap
400
the thermal energy that is contained in hot magma is called 
what is geothermal energy
500
the ozone containing pollution that results from the reaction between sunlight and vehicular or industrial exhaust
photochemical smog 
500
what is one negative we discussed about about using windmills outside of non windy areas or efficiency of them
bird population will be lower
500
the parabolic trough focuses sunlight on a tub filled with what and  that does what 
a tube filled with a heat absorbing fluid such as a synthetic oil or liquid salt 

and second part it turns to steam that turns a turbine which generates electricity 

500
where can tidal energy be used.
only a few places on earth have a tide that is high and low enough to make useful tidal energy 
500
in some areas geothermal energy is pumped into what to provide heat
houses