• # question_answer Scientists have determined the temperature near the Earth's centre 1,000°C hotter than was reported in an experiment am 20 years ago. The actual temperature is? A)  $6,{{000}^{o}}$Celsius         B)  $5,{{000}^{o}}$Celsius         C)  $4,{{000}^{o}}$Celsius         D)  None of these

These measurements confirm geophysical models that say that the temperature difference between the solid core and the mantle above must be at least $1,{{500}^{o}}C$ to explain why the earth has a magnetic field. The research team, which was led by Agnes Dewaele from the CEA, a French technological research organisation, used X-rays from the European Synchrotron Radiation Facility (ESRF) in Grenoble, France, as a key investigating tool.