Multiple choice general knowledge science & technology

earth is_____ billionyrs old

  1. 4.6

  2. 4.54

  3. 4.53

  4. 4.67
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Earth is approximately 4.54 billion years old, determined through radiometric dating of the oldest terrestrial minerals and meteorites. The age is based on dating of lead isotopes in meteorites and Earth's crust. Earth formed shortly after the Sun's formation, through accretion of planetesimals in the protoplanetary disk.

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