This river carries more water than any other on Earth and flows across Brazil into the Atlantic.
What is the Amazon?
This planet gets its rusty color from iron oxide on its surface.
What is Mars?
This "unsinkable" liner sank on its maiden voyage in April 1912.
What is the Titanic?
The number of sides on a hexagon.
What is 6?
Guacamole is made mostly from this fruit.
What is the avocado?
Canberra, not Sydney, is the capital of this country.
What is Australia?
Au is the chemical symbol for this precious metal. – What is gold.
What is gold?
Crowds began tearing down this barrier dividing a German city in November 1989.
What is the Berlin Wall?
The number of players each soccer team has on the field.
What is 11?
Japanese sake is brewed from this grain.
What is rice?
With more than 200 million people, this is Africa's most populous country.
What is Nigeria?
Often called the powerhouse of the cell, it produces most of the cell's ATP.
What is the mitochondrion?
In 1903 she became the first woman to win a Nobel Prize.
Who is Marie Curie?
The number of keys on a standard piano.
What is 88?
This Italian city gives its name to a classic meat ragù.
What is Bologna?
The Strait of Gibraltar separates Spain from this North African kingdom.
What is Morocco?
This gas makes up about 78% of Earth's atmosphere.
What is nitrogen?
King John sealed this charter limiting royal power at Runnymede in 1215.
What is the Magna Carta?
The number of bones in a typical adult human skeleton.
What is 206?
The world's most expensive spice by weight, it comes from the stigmas of a crocus.
What is saffron?
This mountain kingdom is completely surrounded by South Africa.
What is Lesotho?
Named for a German physicist, it's the SI unit of electrical resistance.
What is the ohm?
Before the Spanish conquest, this Andean empire was ruled from Cusco.
What is the Inca Empire?
In degrees, the sum of the interior angles of a pentagon.
What is 540?
Hummus is traditionally blended with this sesame paste.
What is tahini?