Question

What is the source of thermal energy for Earth's mantle?

A Earth's core

B. global warming

C. mantle downwelling

D. radiation from the sun

Answer 1

D. Radiation from the sun

Step-by-step explanation:

The main source of thermal energy for the earth is Sun. The sun is major source which provide heat energy and light energy to the earth. The sun converts almost 4 million tons of energy into electromagnetic radiations which is a source of thermal energy for Earth's Mantle.