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Which inventor is associated with the first practical microwave oven after discovering microwave heating in 1945?
Answer
Percy Spencer
Which inventor created Velcro after studying burrs that stuck to clothing and animal fur?
Answer
George de Mestral
Who invented the World Wide Web and proposed it at CERN in 1989?
Answer
Tim Berners-Lee
Who invented the cotton gin, patented in 1794 to separate cotton fibers from seeds?
Answer
Eli Whitney
Which U.S. state contains The Geysers, the world’s largest geothermal field?
Answer
California
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Which inventor created Velcro after studying burrs that stuck to clothing and animal fur?
Answer
George de Mestral
Who invented the World Wide Web and proposed it at CERN in 1989?
Answer
Tim Berners-Lee
Which renewable-energy process uses microorganisms to break down waste without oxygen?
Answer
Anaerobic digestion
Which renewable-energy device converts wave motion into electricity?
Answer
Wave-energy converter
Which country was the world’s largest producer of geothermal electricity in 2023?
Answer
United States
Which renewable technology concentrates sunlight with mirrors to produce high-temperature heat?
Answer
Concentrated solar power