Concept explainers
To determine: The method to warm the Earth from the inside by radioactive decay and from outside by nuclear fusion.
Answer:
The radioactive decay of uranium in Earth metal warmed the Earth from inside, and nuclear fusion of Sun has always warmed the Earth from outside.
Explanation:
The Earth has solid on its outer core. This solid consists of various radioactive metals like uranium. These radioactive metals produce radioactive decay. This radioactive decay produces heat energy. This heat energy warms the Earth from inside.
The Sun gives continuous energy to the Earth. The primary source of energy on the Sun is the fusion of heavy hydrogen atoms to form the helium atoms. Thus, nuclear fusion warms the Earth from outside.
Conclusion:
Therefore, the radioactive decay of uranium in Earth metal warmed the Earth from inside, and nuclear fusion of Sun has always warmed the Earth from outside.
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