Multiple independent measurements have taken to find out the answer of How Old is the Earth? After years of research, it is estimated that Earth is 4.54 billion years old, and scientists do radiometrically dating of rocks to find out their ages. From the radiometric dates of rocks, they estimate the age of Earth.
Studies have shown that the Earth and the universe are billions of years old. Through research on annual layers in ice, geologists can easily count multiple tens of thousands of years. By using radiometric dating of rocks, some Earth rocks were billions of years old, but the oldest known rocks of the solar system are dated 4.5 billion years. Scientists use the distance and the speed of light to calculate the light has travel billions of years. That’s why the age of the universe is given by the expansion of the universe which is 13.8 billion years old as a whole.
Earth’s age through seasonal rings and layers
Trees form a new growth ring each year, and if you cut a tree trunk horizontally, you can see that. The size of these rings depends on the growth of the tree, if there are drought conditions and the tree’s growth is effected and rings will be narrower, and in good condition, seasonal rings can be thicker and wider. Scientists compare the pattern of the thickness of the ring and thin rings to weather records to verify the accuracy of the method. This method is also used on ■■■■ trees which are on the forest floor.
Super old rocks
How old is the Earth, how can we know with any degree of confidence? For this, we must find the oldest rock or piece of the earth if we can find it, then have to figure out how old is that piece. Finding super old rocks is a tough job and practically harsh, because of plate tectonics of the Earth, in which Earth recycle rocks and break and pour them down into magma just before pumping rocks back up to the surface. “Tiny piece of zircon which is in Western Australia is considered as the oldest rock”.
SUMMARY
Finding Earth’s age is a really big task for scientists but it is a very interesting and tantalizing question for everyone that How old is the Earth? For finding the answer to this question many techniques or methods are being used by scientists and geologists, radiometrically dating of rocks to analyzing annual rings and layers of trees. By using all these methods we found Tiny Zircon in Western Australia which is 4.4 billion years old.
Frequently asked questions (FAQs)
When did the Earth start?
The current layout of our solar system was settled about 4.5 billion years ago. The Earth is formed by the pull of solar dust and gas and making it the third planet from the Sun.
What is beneath the Earth?
The mantle is beneath the Earth, it is made up of three different sub-layers; which are the upper mantle, the transition zone, and the lower mantle. Talking about the thickness of these three sub-layers is 2,900 kilometers, and 84 percent of Earth’s volume is due to these.
Where does the Earth’s atmosphere end?
The enormous exosphere is the final layer of the atmosphere, which is above 10,000 km above the Earth’s surface. But the moon of our Earth is still far away like hundreds of thousands of kilometers away.
Which is the oldest mountain range on the Earth?
Barberton Greenstone Belt is considered the oldest mountain range in the world, which is found in South Africa. Its age is almost 3.2 billion years.
Which is the deepest point on Earth?
Mariana Trench is the deepest oceanic trench on Earth; it is present in the western Pacific Ocean.