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239,757 public questions across 1,818 topics. Challenge yourself, or build the perfect quiz for game night.
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Which plant is the main source of sugar used to make Brazilian fuel ethanol?
Answer
Sugarcane
Which California site is the world's largest geothermal field?
Answer
The Geysers
What percentage is the theoretical maximum efficiency of a wind turbine under the Betz limit?
Answer
59.3%
Which 1954 device is widely recognized as the first practical silicon solar cell?
Answer
Bell Labs silicon solar cell
What renewable technology converts the rise and fall of ocean water into electricity?
Answer
Tidal power
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Latest trivia questions
Which California site is the world's largest geothermal field?
Answer
The Geysers
Which 1954 device is widely recognized as the first practical silicon solar cell?
Answer
Bell Labs silicon solar cell
Which solar power station in Morocco uses mirrors to concentrate sunlight and store heat in molten salt?
Answer
Noor Ouarzazate Solar Complex
What renewable energy source uses underground heat to generate electricity or provide heating?
Answer
Geothermal energy
Which scale classifies tornado damage from EF0 to EF5 in the United States?
Answer
The Enhanced Fujita scale