Geography
This canal, completed in 1914, connects the Atlantic and Pacific Oceans.
Panama Canal
This is the number of days in a leap year
366
This U.S. president's portrait appears on the one-dollar bill.
George Washington
This Dutch post-impressionist painter famously cut off part of his own ear.
Vincent van Gogh
This planet is nicknamed the Red Planet.
Mars
This is the longest river in the world, flowing through northeastern Africa.
the Nile
This is the chemical symbol for gold on the periodic table.
Au
This wall divided a German city from 1961 until it fell in 1989.
Berlin Wall
This Italian Renaissance artist painted the ceiling of the Sistine Chapel.
Michelangelo
This gas makes up roughly 78% of Earth's atmosphere.
nitrogen
This mountain range, home to Mount Everest, is the highest in the world.
the Himalayas
This is the largest organ in the human body.
the Skin
This ancient Egyptian queen formed political alliances with Julius Caesar and Mark Antony.
Cleopatra
This is the world's most famous portrait, painted by Leonardo da Vinci.
Mona Lisa
This physicist developed the theory of general relativity.
Albert Einstein
This is the world's largest landlocked country, bordered by Russia, China, and three other Central Asian nations
Kazakhstan
This search engine's name is a play on the mathematical term 'googol'.
This 1969 NASA mission was the first to land humans on the Moon.
This composer kept writing symphonies even after losing his hearing completely.
Beethoven
This structure is often called the powerhouse of the cell.
mitochondria
This is Africa's largest country by area, mostly covered by the Sahara Desert.
Algeria
This is the only mammal capable of true, sustained flight.
This 1919 treaty officially ended World War I.
Treaty of Versailles
This early 20th-century art movement, associated with Salvador Dalí, explored dreams and the unconscious.
Surrealism
This subatomic particle, confirmed in 2012, gives other particles their mass.
Higgs boson