GEOLOGY

Detailed explanation-1: -Temperature and pressure progressively increase with increased proximity to Earth’s core. Recent studies indicate the core’s temperature may be close to 11, 000 degrees Fahrenheit; that’s nearly 2, 000 degrees warmer than previously thought and hotter than the surface of the Sun, according to a 2013 Forbes article.

Detailed explanation-2: -The Earth gets hotter as one travels towards the core, known as the geothermal gradient. 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.

Detailed explanation-3: -The mantle, which contains more iron, magnesium, and calcium than the crust, is hotter and denser because temperature and pressure inside the Earth increase with depth.

Detailed explanation-4: -The inner core’s intense pressure-the entire rest of the planet and its atmosphere-prevents the iron from melting. The pressure and density are simply too great for the iron atoms to move into a liquid state.