EVERYDAY SCIENCE

Detailed explanation-1: -The geothermal gradient is the amount that the Earth’s temperature increases with depth. It indicates heat owing from the Earth’s warm interior to its surface. On average, the temperature increases by about 25°C for every kilometer of depth.

Detailed explanation-2: -2. How much is the average temperature at depth of 10 km of earth surface? Explanation: The heat is apparent from the increase in temperature of the earth with increasing depth below the surface. Although higher and lower temperature occurs, the average temperature at depth of 10 km is about 200oC.

Detailed explanation-3: -Earth Gets Hotter the Deeper You Go Earth’s geothermal gradient is 15° to 30°C/km within the crust. It then drops off dramatically through the mantle, increases more quickly at the base of the mantle, and then increases slowly through the core.

Detailed explanation-4: -The gradient in old stable continental crust is 20–30 K km−1. Upwelling parts of the mantle ascend nearly adiabatically (i.e., they lose little to no heat to the surroundings) and the gradient is very low, about 0.3 K km−1.