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
chemical reactivity of zircon ions
chemical reactivity of zircon ions
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
are u sure
Yes, I am sure. The radioactive decay of uranium to lead is a reliable method used by scientists to determine the age of Earth. Uranium undergoes radioactive decay over time, forming lead isotopes. By measuring the ratio of uranium to lead in rocks and minerals, scientists can calculate the age of the material. This method has been used to estimate that Earth is approximately 4.3 billion years old.
are you very sure
Yes, I am very sure. The radioactive decay of uranium to lead is a well-established and widely accepted method for determining the age of rocks and minerals, including those found on Earth. This method has been extensively studied and validated by scientists over many years, and it is considered one of the most reliable ways to estimate the age of geological formations.
Which evidence of the giant impact theory suggests that Earth and the moon may have once been in the same place?(1 point)
Responses
The composition of moon rocks and some Earth rocks are similar.
The composition of moon rocks and some Earth rocks are similar.
The temperatures on Earth and on the moon are similar.
The temperatures on Earth and on the moon are similar.
The amount of water on the moon and on Earth is similar.
The amount of water on the moon and on Earth is similar.
The type of gases in the atmospheres of Earth and the moon is the same.