Are You Smarter Than a 5th Grader?

Oxygen makes up about 21% of the Earth’s atmosphere and 65% of the human body by mass.

The ostrich can run at speeds of up to 43 miles per hour (70 km/h) and cover up to 16 feet (5 meters) in a single stride.

Antarctica, the least populated continent, was only discovered in 1820, long after the other six continents were known.

Alexander Graham Bell’s first words on the telephone were to his assistant: “Mr. Watson, come here, I want to see you.”

Einstein’s theory of relativity fundamentally changed our understanding of space, time, and gravity.

The Pacific Ocean covers about 63 million square miles (163 million square kilometers), which is about 46% of Earth’s water surface.

The word “hexagon” comes from the Greek words “hex” meaning six and “gonia” meaning angle or corner.

The Great Barrier Reef is so large it can be seen from space and is the world’s largest living structure.

Green is a secondary color created by mixing blue and yellow, while red, blue, and yellow are the three primary colors.

Paris has been the capital of France since 987 CE, when Hugh Capet, the Count of Paris, became King of France.

The skin of an average adult covers about 20 square feet (1.8 square meters) and weighs about 7 pounds (3.2 kg).

Diamonds are formed deep within the Earth under extreme heat and pressure, typically at depths of 150 kilometers or more.

Antarctica is considered a desert due to its low precipitation, with some areas receiving no rain for millions of years!

The Siberian tiger is the largest subspecies of tiger, with males weighing up to 660 pounds (300 kg).

Two is the only even prime number. All other prime numbers are odd.

Pluto was reclassified as a dwarf planet in 2006, changing the number of recognized planets from nine to eight.

Canberra was chosen as the capital in 1908 as a compromise between rivals Sydney and Melbourne.

Harper Lee’s “To Kill a Mockingbird” won the Pulitzer Prize for Fiction in 1961, just a year after its publication.

Vatican City, an independent city-state, has a population of about 825 people and an area of just 0.44 square kilometers.

Despite being covered in ice, Antarctica is classified as a desert due to its low precipitation levels.

Ottawa was chosen as Canada’s capital by Queen Victoria in 1857, partly because it was located on the border between French and English Canada.

The Nile River flows northward through northeastern Africa for about 6,650 kilometers (4,132 miles).

Amelia Earhart completed her solo flight across the Atlantic in 1932, five years after Charles Lindbergh’s famous solo flight.

The symbol Fe comes from the Latin word “ferrum,” which is thought to have meant “holy rock” or “holy object.”

Ganymede is larger than the planet Mercury and is the only moon known to have its own magnetic field.

Madrid became the capital of Spain in 1561 when King Philip II moved the royal court from Toledo.

Alexander Fleming discovered penicillin by accident when he noticed that mold had contaminated one of his petri dishes and killed the bacteria around it.

Cheetahs can accelerate from 0 to 60 miles per hour (97 km/h) in just three seconds.

Jupiter is so massive that its mass is more than two and a half times that of all the other planets in the solar system combined!

Shakespeare wrote “Romeo and Juliet” around 1595, and it remains one of his most popular and frequently performed plays.

Tokyo became the capital of Japan in 1868, replacing the former capital of Kyoto.

Leonardo da Vinci worked on the Mona Lisa for several years, starting around 1503, but never considered it finished.

While igneous, sedimentary, and metamorphic are the three main types of rocks, pumice is actually a specific kind of igneous rock formed from volcanic eruptions.

Nitrogen makes up about 78% of Earth’s atmosphere, with oxygen only accounting for about 21%.

Mercury completes an orbit around the Sun in just 88 Earth days, the shortest year of any planet in our solar system.