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.
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