Geography · Internal Structure of the Earth
The geothermal gradient represents the increase in temperature with depth. In a normal continental crust, the average rate of temperature rise within the first 3 to 5 kilometres of the Earth's surface is approximately _________.
- 170 °C/km
- 210 °C/km
- 340 °C/km
- 425 °C/km✓
Correct answer
25 °C/km
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