Early during Earth's history what two things contributed heat that led to the internal melting and formation of the core?
A)a hotter proto-sun and the burning off of Earth's early hydrogen atmosphere
B)tidal forces and friction between moving unconsolidated meteorite debris
C)kinetic energy of impacts from nebular debris and decay of radioactive elements
D)chemical reactions between early unstable elements

Question

Quizplus · Accepted Answer

The kinetic energy of impacts from nebular debris and decay of radioactive elements contributed heat that led to the internal melting and formation of the core early during Earth's history. This is supported by evidence such as the high temperatures and pressures required for the formation of the Earth's core and the presence of radioactive decay products in ancient rocks. The other options (A, B, and D) do not provide explanations supported by scientific evidence.

Early During Earth's History What Two Things Contributed Heat That