According to the evolutionary theory, how long ago did the earth form?

Answer 1

The Earth is about 4..5 billion years old. Most textbooks for schools round up to 4.6 byo. They are both acceptable.

Please start doing your own work. Sadly, I have a weakness for Geo questions but all these answers are in your book.

Answer 2

If you are talking about the Darwinian theory of evolution, then this theory does not cover the formation of the Earth.

However, the Earth is believed to be about 4.5 billion years old. This is the rough age of the oldest rocks found on Earth. Before that time the Earth probably did exist, but as a hot ball of gas.

Answer 3

Actually, the age of the earth doesn't have any to do with "evolutionary theory". Evolution covers how life developed with time on the planet.
The earth, by scientific estimates, is about 4.55 billion years old.

Answer 4

The old professor says: Planetary evolution is my research area. I study meteorites to attempt to determine early solar system environments.

Planet Earth evolved from a planetesimal eddy in the original solar accretion disk. The starting age of the evolutionary process was about 5.5 billion years ago. As the planet grew by accretion, it took on a spherical shape slowly growing to near its present size and composition some 4.5 to 5 billion years BP (before present). The Earth is still evolving since it is growing by several tons a day due to accumulating space debris in the form of dust and meteoritic material. It is still in the process of layer separation by density segregation with the heavy materials sinking to the core and the escape of light gases and waters onto the surface by volcanic activity as the mantle convection currents keep the pot stirring.

Answer 5

Evolutionary theory applies to living organisms which first appeared on earth as blue green algae about 1.5 to 2.0 billion years ago or about 3 billion years after the earth was formed (4.5-4.6 billion years ago). We owe a huge debt to these little buggers: They converted an atmosphere that contained about 25% carbon dioxide to one more like about present atmosphere. It took them about a billion years to do this.