Q. Approximately what is the normal rate of temperature rise with depth from the surface of the Earth to the interior of the Earth?
Answer: 1°C per 32 meter
Notes: The different observations show that the rate of increase of temperature is not uniform from the surface towards the earth’s centre. In the beginning, this rate of increase of temperature is at an average rate of 10 C for every 32m increase in depth. While in the upper 100kms, the increase in temperature is at the rate of 120 C per km and in the next 300kms, it is 200 C per km. But going further deep, this rate reduces to mere 100 C per km.