Want to learn 5 interesting facts about the world? As we checked out the different stories about our planet Earth, we were quite amazed at all the different pieces of information that we didn’t know before. And this is the primary goal of the Mind Guild – finding and sharing information that collectively builds of knowledge and hopefully over time, makes us wiser too. This is why we like doing articles that provide fun facts about the world, and in this case, sharing 5 interesting facts about the world.
There are Many World Stories
When you consider that the world is over 4.5 billion years old according to science, and around 6,000 years old according to those with a religious view, then it only stands to reason that the Earth has a lot of stories to tell us. Imagine if our planet could talk, what kind of tales could it share with mankind?
We know our Earth has gone through several ages in its time. It has experienced creation of waters and then watched as land masses grew themselves up out of the water. And over the years after that, it experienced the birth of life through plants and vegetation. And then creatures came along and walked over its lands and swam in its waters. After many more years, a super intelligent creature was created and the Earth was forever changed in many ways.
5 Interesting Facts about the World
With all that said, let us examine these fun facts about the world:
1) The Earth is not Round
As children, we were taught during school that our plant is round. After all, didn’t Columbus and later Magellan kind of prove this fact?
Well, as it turns out, the Earth is not a perfect sphere. As the Earth spins, its gravity pulls toward the center of the globe, but there is a centrifugal force that pushes outward. And this push is totally perpendicular to the axis of the Earth. Simply from geometry, this centrifugal force is greatest at the equator and creates a bulge there. So basically the Earth has love handles.
The existence of the Earth’s love handles has been validated as the its radius across the north and south poles is around 3950 miles, but the radius at the equator is 3963 miles – thus, confirming its love handles.
Another factor adding to the Earth’s bulging center is its composition. In fact, scientists describe trying to measure the Earth is like trying to measure a glob of Jell-O because of climate changes and tectonic plate activity. If you could put the Earth in your hand, then you could squish it like a ripe tomato.
2) Earth Once Had a Twin Planet
This is something that is not talked about very much in the science world, but it is estimated that about 4.5 billion years ago, our planet Earth actually had a twin planet named Theia. This is one of the most exciting fun facts about the world.
But there is more to this story. It is believed that these two planets experienced a violent collision to form the planet that we live on today. So actually the Earth is comprised of two planets. But wait, there’s more! During the collision, a big piece of planet broke off and became our moon!
This theory was pretty much confirmed by the University of California. There they took some moon rocks and discovered that the oxygen isotopes from those were identical to those found on Earth.
3) Over 90% of the Earth’s Oceans Remain Unexplored
Even though over two-thirds of our Earth is comprised of water, most of our oceans remain a total mystery. In the year 2000, the National Oceanic and Atmospheric Administration (NOAA) provided as estimate around 95 percent of Earth’s oceans and an amazing 99 percent of the entire ocean floor is completely unexplored.
They point out that the exploration of the deep regions of the world’s ocean would be enormously expensive and also time consuming. Thankfully, this viewpoint does not stop people from trying and many of them continue to make amazing discoveries along the way.
As you might imagine, the shallow regions of the oceans have received most of the exploration. You could estimate that any ocean area that is no deeper than the height of the Washington Monument –which is around 556 feet –has been pretty fairly thoroughly explored. Yet the average ocean depth is over 13,000 feet, which is the height of numerous peaks throughout the word like the Alps and Rockies.
This is perhaps one of the most fascinating of these 5 interesting facts about the world.
4) The Rotation of the Earth is Gradually Slowing
This is a pretty alarming fact to many people. The Earth’s rotation is slowing because of a transfer of its rotational momentum to the orbital momentum of the Moon and then tidal friction will slow down the Earth’s rotation. The increase in the speed of the Moon causes it to recede slowly from Earth (around 4 cm each year), which will increase its orbital period.
To imagine this action in real life, see yourself riding a bike on a track that is built around a big Merry-go-Round. And you’re riding your bike in the same direction that it is rotating. Suppose now that you take a rope and lasso one of the Merry-go-Round’s horses. This would cause you to gain some speed, but the Merry-Go-Round would then lose speed. In this scenario, you are the Moon and the Merry-go-Round is the Earth, and your rope is the gravity. In orbital mechanical systems, any speed gains will result in higher orbits.
This slowing of the Earth’s rotation will cause days to be a little longer and also a longer month. When the length of one day becomes equivalent to the length of one month, this tidal friction will stop. (ie. When the speed of your bike matches the speed of the Merry-go-Round, it is impossible to gain any additional speed from your rope.) It is estimated that when the day and month become equal, their length will be around 47 days and this will occur billions of years from now. And the distance from Earth to the Moon will be 135% greater.
5) Earth is the Densest Planet in our Solar System
Believe it or not, Earth is the densest planet with a density of around 5.5 grams per cubic centimeter. Mercury is the second densest and slightly lower than Earth’s a density at around 5.4 grams per cubic centimeter.
So why are we concerned with planet densities? The biggest reason is because density is mainly what determines its gravitational field. Also, it composition provides clues as to how it was originally formed.
Actually, the eight planets fit neatly into two groups. The 4 outer planets are those there are the furthest from the Sun. They are called the “gas giants” because they are composed primarily of gases like hydrogen and helium. They also contain lots of water in various states. As you might imagine, the outer planets are less dense.
The other 4 planets are those closest to the Sun and are referred to as the terrestrial planets. These planets are composed mostly of silicate rocks and metals. These are obviously the most dense of the eight planets.
Fun Facts About the World
Thanks for stopping by and reading our article about 5 interesting facts about the world. Stay tuned as we continue to uncover more of these.