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PIMSO 2022 - Science - Senior Secondary - National Round Question 22

PIMSO Science · PIMSO 2022 - Science - Senior Secondary - National Round

Question 22

In 1862, the earth’s age was initially guessed to be ____________ years old by William Thomson by using a heat loss model to estimate the time it took for the earth to cool down from its molten state.
  1. 50 – 100 million
  2. 80 – 250 million
  3. 30 – 120 million
  4. 160 – 500 million
  5. 20 – 400 million