What is the hottest part of the earth?

1. mantle

2. crust

3. asthenosphere

4. core

ANSWER:

Core is the "hottest part" of the earth.

EXPLANATION:

The core of the earth has the temperature of about 6,000° Celsius. It is the "hottest part" of the earth. The temperature is nearly equal to the "temperature of the surface of sun". During the beginning of the planet there was an immense amount of energy. Some part of this energy is the reason for the hotness of the core of the earth.