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Fun Facts for Your 11-year-old Kids

As an 11-year-old, you’re probably just starting to get interested in the world around you. You might be learning some new cool facts and figures that you can impress your friends with.
This blog post is dedicated to all the 11 year olds out there! We want to make sure that your minds never stop growing and you always have access to new knowledge.

Here are some fun facts for kids turning 11!

It’s all about the animals

• The blood of a lobster is not red like ours. It’s a light blue colour because it contains copper rather than iron. Iron is responsible for the colour of blood.

• Birds can sleep with one eye open and one eye closed in order to keep an eye out for other animals who may wish to devour them while they sleep. The result is that half their brain is sleeping and half is awake when they do this.

A Sun Parakeet (Sun conure) parrot sleeping on the branch.

• Poop from animals releases gas that can be converted into electricity, exactly as the gas your folks put in their automobile. Methane is the gas produced by faeces.

• The sound of crickets chirping can tell you how hot or cold it is outside. The more crickets chirp, the warmer the air becomes. When it’s cold, crickets don’t chirp as much.

• The blue whale is capable of producing the loudest sound of any animal on the planet. At a decibel level of 188, the noise can be heard more than 800 kilometres distant.

Beautiful space and universe

• When people travel to the edge of the universe, their bodies stretch. Astronauts return from space with a few of inches more height than they had when they went.

• Stars sparkle because we see them through the atmosphere, which causes them to twinkle. Because the stars are so far away, as the atmosphere wiggles, the stars appear to be sparkling.

• Comets are celestial bodies that travel across space. When they approach close to the sun, they begin to melt, resulting in a stream of drippy moisture and dust that appears to be a tail in the sky.

Two comets pass by a planet.
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• The Sun makes up 99.86 percent of the known mass of the Solar System, with Jupiter and Saturn accounting for the majority of the rest. Mercury, Venus, Earth, and Mars are small inner planets that make up a relatively small percentage of the Solar System’s mass.

• Nicolaus Copernicus, Galileo Galilei, Johannes Kepler, and Isaac Newton were among the astronomers who contributed to the development of a new model that described the movement of the planets with the Sun at the centre of the Solar System.

Our wonderful planet

• Everest is the highest mountain on the planet, with a peak that rises to an elevation of 8,848 metres (29029 ft) above sea level.

Mount Everest Summit in Himalaya Mountains, Nepal.

• The Great Barrier Reef in Australia is the world’s largest living structure and is the largest natural wonder on the planet.

• Around 75% of the world’s volcanoes are located in the Pacific Ring of Fire, which is a region around the Pacific Ocean where tectonic plates collide and form volcanoes.

• Earthquakes that occur out at sea have the potential to generate massive tsunamis that can reach land and risk people’s lives.

• Hawaii is moving closer to Japan at a rate of 10 centimetres every year. This is due to the fact that they are located on separate tectonic plates.

Amazing human body

• Your fingernails develop at a rate that is at least double that of your toenails.

• Hair grows at a rate of approximately 5 inches each year, which is almost as long as a shoe.


• Throughout your whole life, your mouth will produce approximately 10,000 gallons of spit. That’s enough to fill a large swimming pool to capacity.

• Kneecaps, the hard bone on the inside of your knees, are not present when babies are born. Kneecaps develop in size as you age.

• Every day, a small amount of your skin dries out and crumbles away, turning into dust. Dead skin accounts for around 70% of all household dust. You’re always generating new skin to replace the old.

Other interesting facts

• Two types of plants produce sugar: sugar beets, which grow underground like potatoes, and sugar cane, which grows like a thick, long grass. Sugar beets are a type of underground potato.

• Approximately 230 million years ago, dinosaurs first appeared on Earth. Back then, the planet was very different, with towering trees, dense forests, and a slew of roaring volcanoes.

Tyrannosaurus Rex in the jungle.

• When it comes to ketchup, the initial recipe included pickled fish, mushrooms, and herbs as the primary ingredients instead of tomatoes. It was a sauce known as ke-tsiap that was popular in China about 400 years ago, according to historical records.

• The state of New Jersey is home to the Kingda Ka roller coaster, which is the world’s tallest roller coaster. It reaches a height comparable to that of a 40-story skyscraper.

• The world’s largest flower (Rafflesia arnoldii) blooms in Indonesia and can grow to be as enormous as a garbage can (3 feet wide) and weigh as much as a television set (15 pounds).

Rafflesia – the world’s largest flower.
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• The world’s first bicycle, which was invented in 1817, was over 200 years ago today. It didn’t have any pedals; instead, you sat on the seat and scooted the vehicle with your feet.

• The United States and Russia are only around 4 kilometres apart at their closest point. Despite the fact that the Bering Strait, which is 53 kilometres wide at its narrowest point, separates the countries, it contains two islands in the middle. The Russian Federation owns the Big Diomede Island, whereas the United States owns the Little Diomede Island.

• It used to be that marshmallows were prepared from the roots of a plant known as a marsh mallow, which grew in marshes or swamps. Nowadays, marshmallows are primarily composed of sugar.

• It can take as much as 27 gallons of water to wash a day’s worth of dirty dishes by hand, according to some estimates. It just takes 4 to 5 gallons of water to complete the task in an efficient dishwasher.

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Written by James

James has always been intrigued by dinosaurs, the universe, technology, and animals. With a Bachelor of Computer Science and years of writing expertise, he joined World Amazing Facts in 2021 as a staff writer.

Our team at World Amazing Facts is committed to verifying the accuracy of our content. It's possible that we'll get something wrong, or that our knowledge may become obsolete. Please let us know if you see any errors in the information provided.

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