![](c05_fig13.jpg)
Figure 5-13 Temperature and Melting Point of Rock Inside Earth The temperature (yellow curve) rises steadily from Earth’s surface to its center. The melting point of Earth’s material (red curve) is also shown on this graph. Where the temperature is below the melting point, as in the mantle and inner core, the material is solid; where the temperature is above the melting point, as in the outer core, the material is liquid.