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Question
Which allowed scientists to determine that Earth was at least 4.3 billion years old?(1 point)
Responses
magnetic field surrounding zircon
magnetic field surrounding zircon
the radioactive decay of uranium to lead
the radioactive decay of uranium to lead
the electrical conductivity of uranium ions
the electrical conductivity of uranium ions
chemical reactivity of zircon ions
chemical reactivity of zircon ions
1 answer
The correct response is:
the radioactive decay of uranium to lead
This method, known as radiometric dating, allows scientists to determine the age of rocks and minerals, including zircon, which provided evidence that Earth is at least 4.3 billion years old.
