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History of the Earth

The universe is 15 millions years old. According to the big bang theory all the energy were squished into tiny infinitely small point and then exploded resulting into big explosion eventually forming stars, galaxies and other celestial bodies.

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History of the Earth

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  1. History of earth

  2. Origin of universe The universe is 15 millions years old. According to the big bang theory all the energy were squished into tiny infinitely small point and then exploded resulting into big explosion eventually forming stars, galaxies and other celestial bodies.

  3. Formation of earth For the first few billions of years , the earth repeatedly pulverised by asteroids and comets of all sizes. Moon is formed from sun one big collision.

  4. The age of earth According to the oldest fossil found on earth, our earth is around 4,570,000,000 billion years old. We also dated meteorites using radioactive isotopes and their decay products.

  5. Geological time

  6. The early earth heats up The main reason why previous earth used to heat up because of the the earth’s interior. Probable reasons for this are: • Collision • Compressions • Radioactivity of elements

  7. The center of the earth - the core After initial accelerationtemperatures at the depth of 400 km below the earth's surface was so high that the chemical process chemical differential happened in which heavier elements began to sink down and lighter elements such as oxygen and silica floated up towards the surface of earth

  8. Chemical composition of earth The whole earth is made up of iron , oxygen , silica and magnesium which is 93% approximately.

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