Lufthansa is headquartered in France. Answer true or false.
What is the two-character IATA code of Emirates? Answer with the two-character code only.
What is the deepest lake in the world? Answer with the lake name only, without the word Lake.
How many neutrons are in the nucleus of carbon-12? Answer with the whole number only.
In what year did London Heathrow's Terminal 5 open? Answer with the four-digit year only.
In what year did Edwin Hubble publish the relation between galaxy distance and recession velocity? Answer with the four-digit year only.
Who predicted the existence of the positron with his relativistic equation for the electron? Answer with the surname only.
Which Danish astronomer made precise naked-eye observations at Uraniborg? Answer with the surname only.
What is the SI base unit of amount of substance? Answer with the unit name only, in lowercase.
In what year was the kilogram redefined in terms of the Planck constant, taking effect on 20 May? Answer with the four-digit year only.
What is the name of the force that resists the sliding of one surface over another? Answer with the one-word name only, in lowercase.
What is the capital of the US state of Pennsylvania? Answer with the city name only.
How many emirates make up the United Arab Emirates? Answer with the whole number only.
In what year was the Three Mile Island nuclear accident? Answer with the four-digit year only.
In what year did Wilhelm Roentgen discover X-rays? Answer with the four-digit year only.
What is the capital of Finland? Answer with the city name only.
The Large Hadron Collider ring is about how many kilometers in circumference? Answer with the whole number rounded to the nearest kilometer.
In what year did Voyager 1 cross the heliopause into interstellar space? Answer with the four-digit year only.
