A newly formed planet or large asteroid becomes molten due to ______.
A) the last infalling objects
B) decay of radioactive element isotopes
C) Both of the above
D) None of the above. Newly formed planets remain solid inside
Correct Answer:
Verified
Q1: An extrasolar planet is
A) a planet that
Q3: Which one of the following IS a
Q5: _ are located beyond the asteroid belt
Q7: Protoplanets
A)grew in size primarily by accretion.
B)grew in
Q11: A future news release might report that
Q12: A(n) _ is a solar-system object that
Q14: The first solid grains of _ formed
Q16: The oldest rocks found on Earth are
Q17: _ pushed gas and dust particles out
Q19: Which one of the following IS NOT
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