Which Leonardo da Vinci design is considered an early self-propelled vehicle?
Answer
Self-propelled cart
89685 Intermediate Trivia Questions
89685 public questions at this depth. How many can you answer?
How many weeks of formal schooling did Thomas Edison receive?
Answer
12 weeks
What was the name of Thomas Edison’s West Orange home?
Answer
Glenmont
What type of battery did Thomas Edison develop in the early 1900s?
Answer
Nickel-iron battery
Which inventor was Thomas Edison’s principal collaborator on early motion-picture technology?
Answer
William Kennedy Laurie Dickson
What was Thomas Edison’s motion-picture viewing machine called?
Answer
Kinetoscope
What is the exact speed of light in a vacuum, a value central to electromagnetic theory?
Answer
299,792,458 metres per second
Who invented the Van de Graaff generator in 1929?
Answer
Robert J. Van de Graaff
What is the name of the three-phase electrical system used for most high-power transmission?
Answer
Three-phase power
Which scientist formulated the mathematical laws of electromagnetism now known as Maxwell's equations?
Answer
James Clerk Maxwell
What type of transformer increases alternating voltage while reducing current?
Answer
Step-up transformer
Which inventor developed the first practical steam turbine in 1884?
Answer
Charles Parsons
Who invented the first successful powered airplane, making the Wright brothers' 1903 flight possible?
Answer
The Wright brothers
Which inventor created the first successful practical diesel engine in the 1890s?
Answer
Rudolf Diesel
Which inventor created the first commercially successful safety razor with disposable blades?
Answer
King Camp Gillette
Which inventor built the first successful liquid-fueled rocket, launched in 1926?
Answer
Robert H. Goddard
Which inventor created Velcro after studying burrs that stuck to clothing and animal fur?
Answer
George de Mestral
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
Which French facility is one of the world’s largest solar furnaces?
Answer
Odeillo Solar Furnace
Which photovoltaic material is used in the thin-film solar technology abbreviated CdTe?
Answer
Cadmium telluride
Which genetic process allows bacteria to acquire DNA from their surroundings without cell division?
Answer
Natural transformation
Which fossil bird from Germany had feathers, teeth, and a long bony tail?
Answer
Archaeopteryx
What is the name of the equilibrium principle stating that allele frequencies remain constant without evolutionary forces?
Answer
Hardy–Weinberg equilibrium