What is the speed of light in a vacuum, in kilometres per second, rounded to the nearest thousand?
What is the capital city of Vietnam?
What is the atomic number of carbon?
Which physicist discovered radium and polonium with her husband?
How many bones are in the adult human body?
What is the capital city of Tanzania?
What is the capital city of Kazakhstan?
How many days are in a leap year?
Which chemical element has the symbol Pb?
What is the capital city of New Zealand?
What is the capital city of Canada?
Which South Korean artist performs 'Gangnam Style', the first YouTube video to reach one billion views?
What is the atomic number of gold?
How many elements were in the periodic table as of 2025?
In what year did Elvis Presley die?
In what year did the New Horizons spacecraft fly by Pluto?
In what year did the Space Shuttle Challenger disaster occur?
In what year did NASA's Curiosity rover land on Mars?
In what year did the Beatles release the album Abbey Road?