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Which color of visible light has the longest wavelength? Answer with the color name only, in lowercase.
In what year did William Herschel discover Uranus? Answer with the four-digit year only.
In what year did the Channel Tunnel open? Answer with the four-digit year only.
How many countries share a land border with Germany? Answer with the whole number only.
Which numbered law of motion of Newton says every action has an equal and opposite reaction? Answer with the whole number only.
What is the two-character IATA code of Air France? Answer with the two-character code only.
In what year did Roger Penrose, Reinhard Genzel and Andrea Ghez share the Nobel Prize in Physics? Answer with the four-digit year only.
What is the two-character IATA code of Turkish Airlines? Answer with the two-character code only.
In what year did IndiGo operate its first flight? Answer with the four-digit year only.
Which asteroid moon did NASA's DART spacecraft hit in 2022? Answer with the name only.
Buzz Aldrin was the first person to step onto the Moon. Answer true or false.
How many member states does the European Union have, as of 2025? Answer with the whole number only.
Which strait separates Spain from Morocco? Answer with the strait name only, without the words Strait of.
In what year did Mars Pathfinder land on Mars with the Sojourner rover? Answer with the four-digit year only.
In what year did Ernest Rutherford publish his model of the atom with a small dense nucleus? Answer with the four-digit year only.
How many protons are in the nucleus of a uranium atom? Answer with the whole number only.
The shore of the Dead Sea lies below sea level. Answer true or false.
What is the capital of Venezuela? Answer with the city name only.
Pluto is larger than Earth's Moon. Answer true or false.
What is the capital of the US state of Washington? Answer with the city name only.
Which moon of Jupiter is the most volcanically active body in the Solar System? Answer with the name only.
In what year did the Swissair fleet grounding occur? Answer with the four-digit year only.
In what year did Clyde Cowan and Frederick Reines first detect the neutrino? Answer with the four-digit year only.
In what year did Carl Anderson discover the positron? Answer with the four-digit year only.
Which river flows through Baghdad? Answer with the river name only, without the word River.