1. Abraham Lincoln
   John Adams
2. James Monroe
   Benjamin Franklin

John Adams served as the vice president under Washington from 1789 to 1797. He then went on to serve two terms as president. Thomas Jefferson was Adams' VP, and later went on to become the Commander in Chief himself.

1. Telegraph
   Telephone
2. Penicillin
   Television

When he was just a teen in the 1920s, Philo Farnsworth invented the first electric television. Oddly enough, he only ever made one TV appearance himself -- on a 1957 episode of "I've Got a Secret."

1. "Dallas"
   "MASH"
2. "Gunsmoke"
   "Miami Vice"

The third season finale of "Dallas" ended with J.R. being shot by a mysterious perpetrator. Viewers spent months waiting to find out who pulled the trigger. It was revealed in the season four premiere -- the most-watched TV show in history to that date -- that it was Kristin whodunit.

1. Circle
   Square
2. Ellipse
   Triangle

Though it probably dates back father than the work of Pythagoras, the Pythagorean Theorem forms the basis for modern geometry. It states that the hypotenuse squared of any right triangle is equal to the sum of the other two sides squared.

1. Nick
   Tom
2. Jay
   Tim

Often called the Great American Novel, Fitzgerald's "The Great Gatsby" tells the story of a wealthy man named Jay Gatsby who can afford to buy anything he wants -- except for the love of Daisy. The story is a caution on living in excess, and a commentary to the culture of the Roaring Twenties.

1. Slovenia
   Hungary
2. Croatia
   Ukraine

Mrs. Trump was born in Solvenia. The European country, whose capital is Ljubljana, is almost entirely landlocked, except for a tiny portion that borders the Adriatic Sea.

1. Marla
   Sandra
2. Elizabeth
   Ethel

Lucille Ball may have had top billing on '50s classic "I Love Lucy," but the show wouldn't have been the same without her neighbor and best friend Ethel Mertz. Vivian Vance played Ethel, who often found herself in hot water thanks to Lucy's harebrained schemes.

1. Ag
   Si
2. Sr
   Tn

Silver is represented by the symbol Ag on the periodic table. Its shiny cousin, gold, uses the symbol Au.

1. Alan Shepard
   Alan Bean
2. Michael Collins
   John Young

Neil Armstrong and Buzz Aldrin get a lot of credit for being the first men to walk on the moon, but they didn't pull off that 1969 moon landing alone. Another astronaut, Michael Collins, was also part of that Apollo 11 mission.

1. Earth
   Saturn
2. Uranus
   Neptune

You'll probably have to dig deep in your memory for this one, but many elementary school kids memorize the order of the planets like this -- My Very Excellent Mother Just Served Us Nachos, or Mercury Venus Earth Mars Jupiter Saturn Uranus and Neptune -- with Neptune being the farthest from the sun.

1. 8
   12
2. 16
   24

Coffee? Chocolate? Cheese? Being able to translate from ounces to pounds is helpful not only when shopping for food favs, but also for tracking calories and preparing recipes. No matter which units you're dealing with, as long as you remember that a pound is equal to 16 ounces, you'll be good to go.

1. Mick Jagger
   John Lennon
2. George Harrison
   Ringo Starr

John, Paul, George and Ringo took over the world as The Beatles in the early '60s. Mick Jagger made quite a splash of his own, as part of The Rolling Stones.

1. Drink up.
   Call the police.
2. Launch a protest.
   Put on a hazmat suit.

In the '90s, a student putting together a science fair project came up with the idea to warn people about dihydrogen monoxide. This compound of two hydrogen atoms and one oxygen atom got people riled up -- and continues to do so in online memes -- but it's really something safe and familiar -- water.

1. War of 1812
   Civil War
2. WWI
   WWII

World War I saw millions of lives lost around the world between 1914 and 1918. The bloodshed officially ended in 1919, with the signing of The Treaty of Versailles.

1. Yellow
   Yangtze
2. Amazon
   Mississippi

At 4,365 miles long, the Amazon River in South America is the longest river in the world. It's followed by the Nile in Africa at 4,258. The mighty Mississippi in the U.S. doesn't even crack the top 3, at 3,902 miles.

1. Tower Bridge
   Brooklyn Bridge
2. Golden Gate Bridge
   Sydney Harbor Bridge

The Brooklyn Bridge was the earliest of these famous bridges, opening in 1883. The Tower Bridge was next in 1894, while the Golden Gate and Sydney Harbor bridges both opened in the 1930s.

1. "Wuthering Heights"
   "The Grapes of Wrath"
2. "Pride and Prejudice"
   "Jane Eyre"

Emily Bronte completed just one book in her short life. The Gothic classic "Wuthering Heights," released in 1847, tells the story of the tortured Heathcliff and his love Catherine as they lived on the English moors.

1. Ship
   Plane
2. Building
   Song

World War II saw the debut of horrific nuclear bombs, which the U.S. dropped on cities in Japan. The first of these was carried to Hiroshima in 1945 by pilot Colonel Paul Tibbets, aboard his plane the Enola Gay.

1. Ireland
   England
2. Wales
   Scotland

Great Britain is made up of England, Scotland and Wales. The UK consists of England, Scotland, Wales and Northern Ireland. the Republic of Ireland is not part of either one.

1. Austin
   Dallas
2. Memphis
   Raleigh

Graceland is a mansion made famous by its hip-swiveling owner. Purchased by Elvis Presley in 1957, it's also where he died 20 years later.

1. 25,600 BC
   2,560 BC
2. 560 BC
   560 AD

The oldest known Egyptian pyramids are at Saqqara, and dated back to around 2,630 BC. The Great Pyramid of Giza is around 70 years younger, and was completed around 2,560 BC.

1. Blue whale
   Leatherback Turtle
2. African elephant
   Great white shark

The biggest animal on the planet is the blue whale. It can be as long as 105 feet and weigh 200 tons. Just the tongue on this creature weighs about as much as an elephant, while its heart weighs as much as a car.

1. Telephone
   Penicillin
2. Measles vaccine
   Swimming the English Channel

A century ago, a simple infection could kill you because doctors had no effective way to treat it. In 1928, Alexander Fleming discovered the power of penicillin, earning him the 1945 Nobel Prize in Medicine.

1. Arizona
   Colorado
2. Tennessee
   Alaska

Alaska is often called "The Land of the Midnight Sun," though its official nickname is "The Last Frontier." The 49th state -- and the largest by total area -- joined the union in 1959.

1. Helium
   Hydrogen
2. Oxygen
   Silicon

The Earth's crust is made up of about 48 percent oxygen and 28 percent silicon. The rest is a mix of aluminum, iron, calcium, sodium and other elements.

1. Dallas Cowboys
   New England Patriots
2. Washington Redskins
   Green Bay Packers

Green Bay not only won the first Super Bowl in 1967 by defeating the Chiefs -- they also won the second the next year by beating the Oakland Raiders. Their streak ended the next year when the Jets played their way to victory against the Colts.

1. About 10 percent
   About 25 percent
2. About half
   About 90 percent

An adult human has 206 bones. Each foot includes 26 bones, while each hand includes 27. That means that around half of all of your bones are in your hands or feet!

1. Cirrus
   Stratus
2. Cumulus
   Rhombus

Cumulus clouds are large and bumpy. They are the most common cloud type for producing heavy precip. Cirrus clouds tends to produce little rain or snow, while stratus clouds sit lower to the earth and can produce some drizzle or light snow.

1. WWI
   WWI
2. Civil War
   American Revolution

In the 18th century, American colonists engaged in a battle for independence with Great Britain. This American Revolution officially ended on September 3, 1783 with the Treaty of Paris.

1. Greenland
   Borneo
2. Madagascar
   Bermuda

While Australia is larger than Greenland, it's typically defined as a continent, making Greenland the world's largest island. It's followed by New Guinea, Borneo, Madagascar and Canada's Baffin Island.

1. Bob Dylan
   Brian Jones
2. Bill Wyman
   Keith Richards

He may have had a hit song called "Like a Rolling Stone," but Dylan was never part of The Rolling Stones. In the '10s, the band's touring members include Mick Jagger, Keith Richards, Ronnie Wood and Charlie Watts.

1. Abraham Lincoln
   Andrew Jackson
2. Theodore Roosevelt
   Herbert Hoover

Andrew Jackson was the first Commander in Chief of those listed, serving from 1829 to 1837. Then came Lincoln, Roosevelt and Hoover.

1. "Cheers"
   "MASH"
2. "The Golden Girls"
   "Gilligan's Island"

The tale of a fateful trip, "Gilligan's Island," aired from 1964 to 1967. "MASH" premiered in the '70s, while "Cheers" and "The Golden Girls" came out in the '80s.

1. Honduras
   Nassau
2. Atlantis
   Freeport

The Bahamas consists of 700 islands in the Atlantic Ocean. It's capital is Nassau, located on the island of New Providence. The nation has been independent from Britain since the '70s.

1. Moai
   Moana
2. Rapai
   Mayans

Easter Island serves as a source of fascination for people around the world thanks for giant stone figures called Moai. There are more than 880 Moai on the island. They were built by the Rapa Nui between 1250 and 1500 -- and surprisingly, are more than just giant heads. Buried beneath the soil, the Moai actually have bodies.

1. Oxygen
   Silver
2. Nitrogen
   Helium

Nitrogen makes up around 78 percent of the Earth's atmosphere, followed by oxygen at 21 percent. The rest is argon, carbon dioxide, water and various other gases.

1. Maryland
   Pennsylvania
2. Virginia
   Tennessee

The American Civil War pitted north against south in a bloody battle that lasted from 1861 to 1865. The horror ended when General Lee surrendered to General Grant at Virginia's Appomattox Court House.

1. Aruba
   Jamaica
2. Haiti
   Barbados

Robyn Fenty, better known as Rihanna, hails from the island nation of Barbados. Discovered in 2003, she has gone on to have a long career in music and movies.

1. Montana
   Arizona
2. Colorado
   Utah

There is only one spot in the entire U.S. where four states share a border. This occurs where Arizona, Colorado, New Mexico and Utah meet in the southwest at the Four Corners National Monument.

1. Red River
   Missouri River
2. Colorado River
   Arizona River

The Colorado River runs from the Rocky Mountains all the way down to Mexico. Over the past 2 billion years, its rushing waters helped to carve out the spectacle known today as the Grand Canyon.