How thick is each layer of the earth?

1 Answer
Mar 3, 2018


The radius of the Earth is about 4,000 miles (6,400 kilometers).


  • The Inner Core- It is the hottest part of our planet and at the temperature between 5,000 and 7,000 degrees Celsius. It is believed to have formed recently,half of a billion years ago
  • The Outer Core- In this there is iron and nickel present in the liquid form. Its temperature is comparatively low than the inner core,4,000 and 5,000 degrees Celsius and is if taken as distance is estimated to be 2,300 km thick.

  • The Mantle- Its a denser than the core and moves as semi-solid materials, and is hot to 500 to 900 degrees Celsius. It extends to 2,900 kms thick and is composed of silicate minerals.

  • The Surface and the Crust- Its the outermost and also the thinnest layer of the Earth's radius. Its thickness is of 40 kilometers in thickness and is divided in to fifteen major tectonic plates that are rigid in the center and have geologic activity at the boundaries. Its temperature is the coolest of all the layers.