Show:
Wind
Coal
Hydropower
Solar
Petroleum
100
Grind wheat and pump water
What tasks did early windmills perform.
100
World leader of known reserves-- coal
What is the United States?
100
Water cycle
What is the flow of water between the earth and the atmosphere?
100
The sun's energy is produced in this process
What is nuclear fusion?
100
Transportation
What is the major use of petroleum?
200
Uneven heating of the earth's surface
How is wind produced?
200
Primarily by trains
What is the main transportation method for coal?
200
Reservoir
What is the storage area for water behind a hydro dam?
200
Radiant
In what form does the sun's energy reach the earth?
200
Almost half of all petroleum is refined into this product
What is gasoline?
300
Wind farm
What is a cluster of wind turbines called?
300
Wyoming, West Virginia, and Kentucky
What are the top coal producing states?
300
Grinding wheat
What were early water wheels used for?
300
Eight minutes
How long does it take for the sun's energy (light) to reach the earth?
300
Texas, Alaska, California, Louisiana, and Oklahoma
What are the top oil producing states?
400
Three-fourths of the time- wind turbines
What is the average operating time of a wind turbine?
400
The major use of coal is to produce this
What is electricity?
400
Water spins the blades of this device to power a generator?
What is a turbine?
400
This device converts radiant energy into electricity
What is a photovoltaic (PV) cell?
400
Two-thirds of total supply, mostly from Canada, Mexico, and Saudi Arabia
How much oil do we import?
500
Texas
What state is the top producer of wind energy?
500
Two-thirds of U.S. coal is mined by this method
What is surface mining?
500
Five to ten percent of total production
What is hydropower's contribution to U.S. electricity production?
500
This device converts radiant energy into heat
What is a solar collector?
500
Gasoline, heating fuel, and kerosene
What are three petroleum products?