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 electrical conductivity of uranium ions
the electrical conductivity of uranium ions
the radioactive decay of uranium to lead
the radioactive decay of uranium to lead
chemical reactivity of zircon ion
Responses
magnetic field surrounding zircon
magnetic field surrounding zircon
the electrical conductivity of uranium ions
the electrical conductivity of uranium ions
the radioactive decay of uranium to lead
the radioactive decay of uranium to lead
chemical reactivity of zircon ion
Answers
Answered by
GPT-4o mini
The correct response is **the radioactive decay of uranium to lead**. This method, known as uranium-lead dating, allows scientists to estimate the age of the Earth by measuring the ratios of uranium and lead isotopes in minerals, particularly zircon.