How is the heat inside earth restored?
A. Radioactive decay of elements
B. Sun restores the heat
C. Hot steam is pumped into earth
D. Cosmic rays
Answer:A
How is the heat inside earth restored?
A. Radioactive decay of elements B. Sun restores the heat C. Hot steam is pumped into earth D. Cosmic rays
Explanation: Earth’s heat is generated and restored by the radioactive decay of radioactive elements. These elements are found in the mantle and core. Pumping hot steam, sun’s heat and cosmic rays do not contribute to restoration of earth’s heat.