MYSTERIES OF EARTH

 MYSTERIES OF EARTH:

1)    Periodic reversal of Earth’s magnetic fields:

           This is due to the outer core’s flowing liquid iron. Due to this flow even the      magnetic poles of Earth get interchanged. This is believed to have happened early long back.                                                                                                                                              

2)    WATER: According to scientists the planet Earth was a dry  rock  when it was formed about 4.5 billion years ago. But due to the impact of big asteroids with ice water is added to the Earth gradually. Water covers about 71% of surface area of Earth whereas other planets in solar system almost have no water. Yet some believe that water was around Earth ever since its formation.                                            

3)    The living clouds:  Formed by hundreds of starlings, gliding in duos, this phenomenon is known as a murmuration. Birds usually sit and rest on it. This is not known how exactly they are alive.

4)    The mystery of the Bermuda triangle: It is located in North Atlantic ocean. It is between Bermuda Miami in Florida and San Juan in Puerto Rico. It covers about 500000 sq. miles. About 20 planes and 50 ships that crossed this area vanished without known reasoning. Extra localized magnetic pull of the Earth maybe responsible. There is a similar location in Mexico where planes crossing that area fell on to the ground. Such spots on Earth should be located and aero planes ships and other vehicles should not be allowed to cross those areas.

5)    The nystery of Moon formation : The chemical composition of Moon and  the Earth are the same, indicating that the Moon came out of Earth, and not due to impact from  any other body. But some suggest that in the early   days of formation of Earth it would have flung out molten rock into space due to some impact. Yet the mystery of the  Moon is not clearly known.

6)    Generation of oxygen on Earth: Microscopic creatures, cyanobacteria produced oxygen as waste and filled the skies with oxygen about 2.4 billion years ago. But rocks reveal oxygen levels from 3 billion years ago. Oxygen is a key factor in deciding the formation of life on Earth.

7)    Life on Earth: Has the life formed on Earth or delivered through meteorites from inter stellar space is not known yet. The most basic components such as amino acids and vitamins have been found on ice grains inside asteroids and in the most extreme environment on Earth. How these parts combined together to form life on Earth is still a mystery.

8)    Cambrian Explosion: After 4 billion years of Earth’s history the appearance of complex life in the Cambrian, marks a unique turning point. Suddenly there were animals with brains and blood, eyes and hearts, all evolving more quickly than any other planetary period. A jump in oxygen levels also took place just before this Cambrian explosion. Other factors such as the arms race between predator and prey can also explain the rise of the animals

9)    :  Earthquakes start when rocks underground and send seismic waves towards the surface, but we do not know when it occurs. When two powerful planets come together in exact conjunction they exert more pull on the layers of Earth directly below it. This pressure can lift the layers of Earth causing earthquake, especially if the layers are faulty. I have observed this phenomena practically.

10)                       EARTH’S CORE: Most part of the inner layers of Earth are unexplored. The reason is that the bottom layers of Earth are inhospitable. The layer below the crust, the mantle, is composed of mostly solid silicate. But the very heart of earth remains as a mystery.

DINOSAURS: These existed about 65 million years ago on Earth. They were the undisputed rulers of the prehistoric world. What caused these massive creatures end is a mystery. Some believe that a big asteroid struk the Earth causing  enormous dust covering Earth and obstructing sun light to reach Earth. Others believe the enormous volcanic activity that destroyed the massive animals. However the exact reason is not known yet.