Question : The age of the Earth is currently thought to be:
Option 1: 4.5 billion years
Option 2: 4 billion years
Option 3: 3.5 billion years
Option 4: 5 billion years
Correct Answer: 4.5 billion years
Solution : The correct answer is 4.5 billion years .
The age of the Earth is currently thought to be 4.5 billion years old, plus or minus 50 million years. In Northwestern Canada, scientists discovered rocks about 4.03 billion years old. In Australia, they discovered minerals about 4.3 billion years old.
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