What is the Earth? how is the earth formation ?
Answers
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QuesTion :-
What is the Earth ? how is the earth formation ?
AnsWer :-
☁ What is Earth ?
→ The Earth is an oasis of life in the universe. The temperature, the weather and many other factors contribute to sustain life on earth. The temperature at the earth's centre or the core may be as a high 7000°C, hotter than the surface of the Sun.
→ The Earth is 4.5 to 4.6 billion years old, but the oldest known rocks are less than 4 billion years old. The oldest fossils of living organism are less than 3.9 billion years old.
☁ How the earth formation ?
→ Earth is cooling now but very, very slowly, because it makes heat in its interior. Earth is thought to have arisen from a cloud of gas and dust in space. Solid particles, called 'planetesimals' condensed out of the cloud, just like the rain. They are thought to have stuck together and created the earth early. Bombarding planetesimals heated earth to a molten state.
→ So, earth started out with a lot of heat.
→ In other words, earth has been losing heat since it was formed billions of year ago. But it is producing almost as much heat as it is losing. The process by which earth makes heat involves breaking down of natural radioactive elements inside the earth's core like Uranium. Uranium is a special kind of element because when it decays, heat is produced. It is this heat that keeps Earth from cooling off completely.
→ While the heat energy e produced inside Earth is enormous, it is some 5,000 times less powerful than what earth receives from the Sun. The sun's heat drives the weather and ultimately causes erosion of use mountains to tiny rocks and sand.
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