Do You Know What a 5th-Grader Should Know?

After declaring independence in 1776, there were originally only 13 states. Today, there are exactly 50 states; Delaware was the first and Hawaii is the most recent.

Russia is without a doubt the largest country in the world. In fact, it is over twice the size of the contiguous United States.

Spiders are extremely diverse, with some being extremely dangerous while others are completely harmless. They are notably found all over the world being on virtually every continent (except Antarctica).

There are seven primary symbols that are used in the Roman numeral system: I, V, X, L, C, D, M. The meaning depends on how they are placed in relation to each other, so VI equals 6.

There are other, more complex states of matter but these three are the most simplistic. Water can easily be transformed through all three states: liquid at room temperature, solid as ice, and gaseous as steam.

Thomas Edison is often hailed as being America's greatest inventor. He is also credited with developing the motion picture camera and the phonograph.

Gunpower was invented in ancient China and had many applications, one of which was being used in fireworks. Gunpowder is known as one of the "Four Great Inventions of ancient China", along with papermaking, printing, and the compass.

The protagonist is the main character in a story; whether that be a novel, film, play, or other type of narrative piece. In some cases, protagonists may also serve as narrators.

It is worth mentioning that the act of applauding has no definitive origin in human history. In fact, references to applause as a sign of approval and enjoyment can be found in various ancient cultures.

Los Angeles is notable for being the second most populous city in the United States after New York City. It is notable for being the home of Hollywood.

The Olympic Games' five-ringed symbol was originally designed in 1912. The symbol consists of 5 interlocking rings that have different colors; blue, yellow, black, green, and red.

The most widely used calendar in the world is the Gregorian calendar. The four months that have 30 days are September, April, June, and November.

The landmasses on Earth are most commonly divided into seven separate continents. These are: Asia, Africa, Europe, North America ,South America, Australia, and Antarctica.

The kilogram is the SI base unit of mass. Grams are represented by the symbol "g" while kilograms are represented by the symbol "kg".

France is notable for being the largest country in Western Europe and the third largest in all of Europe. In terms of population, Paris is also the largest urban area in the European Union.

An antonym is simply defined as any word that has the opposite meaning of another word. For example, "outside" is the antonym of "inside".

The five question words are also sometimes referred to as the "Five Ws". They are widely considered to be fundamental questions when it comes to problem solving and information gathering.

Washington D.C. is also the capital of the United States of America. It is named after the Founding Father (and first President of the United States) George Washington.

Humans and many other living organisms are naturally competitive. Competitiveness can be seen in recreational activities and also in the ever persistent fight for survival.

Hexagon is the name that is given to any polygon that has six sides. The name is derived form the Greek word "hex" which means "six".

Octagon is the name that is given to any polygon that has six sides. Octagons can be found as the shape of many street signs and also as a design element in architecture.

Neil Armstrong was the first person to set foot on the moon and Buzz Aldrin was second. Armstrong first touched the moon's surface 9 minutes before Aldrin.

Jupiter is without a doubt the largest planet in the solar system. Its overall mass is over twice that of all the other planets in the solar system combined.

The lungs are one of the most essential organs in the human body. However, it is worth noting that humans can actually survive with just one lung if the other is damaged. This is obviously not optimal, though.

Spain, France, and Germany rank within the top ten largest countries in Europe. They are also notable for being three of the most populous countries in Europe as well.

Australia is the sixth largest country in the world and is also notable for being classified as a continent as well (the Australian continent does encompass other islands). Australia and Antarctica are the only continents that are entirely in the southern hemisphere.

Mercury gets its name from the mythological Roman deity that was the messenger of the gods. It is also notable for being the smallest planet in the solar system.

The Pyramids of Giza are notable for being the only one of the Seven Wonders of the World that still exists to this day. They are symbolic within Egyptian culture.

The battle is notable for having the largest number of casualties of the entire war. It is also referenced as one of the most important and influential events in the overall conflict.

The English alphabet that is used today is actually a Latin alphabet that consists of 26 letters. The letter that is used the least is "Z", while the letter that is used the most is "E".

Alaska is by far the largest state in the U.S., being over twice the size of Texas (the second largest state". However, Alaska is also the most sparsely populated state and the 3rd least populous overall.

The Pacific Ocean is notable for being both the largest and the deepest ocean in the world. Hawaii is notable for being the only U.S. state that is located outside of North America.

Rhode Island is by far the smallest state in the United States. It is also notable for being the second most densely populated state as well.

As the name suggests, adverbs are typically defined as a word that modifies a verb. However, some more complex definitions also define adverbs as also modifying other adverbs or adjectives.

The United States, Canada, and Mexico are the three largest countries in North America. The Canada–United States border is notable for being the longest international border in the world between two countries.

Egyptian hieroglyphics are an ancient writing system that was primarily used in ancient Egypt. It notably had at least 1,000 distinct characters that were used.

Wolves are actually closely related to domesticated dogs that are kept as pets today. Not all canines form packs but those that do use them as a social net for raising young or as a means of effectively hunting for food.

In the context of the United States, The Bill of Rights refers to the first ten amendments to the Constitution. It was created on September 25, 1789 and then ratified on December 15, 1791.

Sheep are notable for being one of the earliest animals that were domesticated by humans. "Sheep" is somewhat unique for being one of a handful of words that is pronounced the same when it it both singular and plural.

A herbivore is any animal that has a diet that primarily eats plant material. On the other hand, a carnivore is any animal that primarily eats animal tissue.