The geothermal gradient is defined as the increase in temperature with depth in the earth. Accordingly, in normal continental crust, the rate of temperature rise within the first 3 to 5 kilometres of the Earth’s surface is approximately _________ .

Questions › Category: GA/Static › The geothermal gradient is defined as the increase in temperature with depth in the earth. Accordingly, in normal continental crust, the rate of temperature rise within the first 3 to 5 kilometres of the Earth’s surface is approximately _________ .
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The geothermal gradient is defined as the increase in temperature with depth in the earth. Accordingly, in normal continental crust, the rate of temperature rise within the first 3 to 5 kilometres of the Earth’s surface is approximately _________ .

1. 70 °C/km
2. 25 °C/km           (Ans)
3. 40 °C/km
4. 10 °C/km