Question

What is the relative temperature of each layer of Earth???

Answer 1

The inner core of the earth has temperature  around  13,000°F (7,200°C = 7,500 K), which is hotter than the surface of the Sun. Next, the temperature of  mantle   is about 1,600° F (870° C) and at the bottom of the mantle, the temperature is about 4,000-6,700° F (2,200-3,700° C).

Answer 2

• The temperature is around 1000°C at the base of the crust, around 3500°C at the base of the mantle, and around 5,000°C at Earth’s centre.
• The temperature gradient within the lithosphere (upper 100 km) is quite variable depending on the tectonic setting.
• Gradients are lowest in the central parts of continents, higher in the vicinity of subduction zones, and higher still at divergent boundaries.
• The fact that the temperature gradient is much less in the main part of the mantle than in the lithosphere has been interpreted to indicate that the mantle is convecting, and therefore that heat from depth is being brought toward the surface faster than it would be with only heat conduction.
• The fact that the temperature gradient is much less in the main part of the mantle than in the lithosphere has been interpreted to indicate that the mantle is convecting, and therefore that heat from depth is being brought toward the surface faster than it would be with only heat conduction.

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