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What do wind turbines, hydro electric dams, and ethanol plants have in common
All produce electrical current without pollution
All use generators to produce electrical current
All convert gravitational potential energy to electric current
All convert thermal energy to electrical energy
Electric current is the flow of ______________________
both protons and neutrons
According to the Department of Energy website, all of the following are factors below affect the amount of SOLAR RADIATION (light energy) entering the Earth EXCEPT for one, which is it?
Time of the Day
The "pressure" that pushes the electrons in a circuit is called the ____________________________________
_____________________ is the measurement of how many electrons are flowing in a point of a circuit.
Sunlight is made of bundles of radiant energy called
The main material that is used in the production of photovoltaic cells is __________________
The branch of dynamics that deals with the motion of air and other gaseous fluids, and the forces acting in motion relative to such fluids.
The diagram above shows a wind turbine. Which section of the wind turbine converts wind energy to electrical energy?
What causes the production of wind?
rotation of the Earth
variations in the Earth's atmosphere
the Sun heating the atmosphere
all of the above
How many blades does a modern wind turbine have?
There is no standard number of blades
Roughly how tall are most utility - scale wind turbine towers in the U.S.
65 meters (213 feet)
82 meters (269 feet)
114 meters (374 feet)
140 meters (460 feet)
Which U.S. state gets the highest percentage of its electricity from wind?
Which nation leads the world in installed wind energy?
How many jobs were supported by the U.S. wind power industry in 2016
36, 000 jobs
101, 000 jobs
73, 000 jobs
What wind speed is said to be necessary to make large wind energy systems economically viable?
6 m/s (13 mph)
3 m/s (12 mph)
9 m/s (20 mph)
12 m/s (27 mph)
Which U.S. state generates the most utility-scale solar power?
The map below shows the annual average wind within the U.S. Which U.S. region is most likely to benefit from wind turbines?
Western region of the U.S.
Southern region of the U.S.
Midwest region of the U.S.
Northeast region of the U.S.