which allowed scientists to determine that earth was at least 4.3 billion years old?(1 point)
the type of glases in the atmospheres of earth and the moon is the same.
the composition of moon rocks and some earth rocks are similar.
the amount of water on the moon and on earth is similar.
the temps on earth and on the moon are similar.
The composition of moon rocks and some earth rocks are similar.
The composition of moon rocks and some Earth rocks are similar.
The correct answer is: the composition of moon rocks and some earth rocks are similar.
To determine the age of the Earth, scientists rely on the field of study called geochronology, which involves analyzing the rocks and minerals on the Earth's surface. Through various dating methods, scientists have been able to establish the age of our planet.
One of the key pieces of evidence that helped scientists determine the approximate age of the Earth is the similarity in the composition of moon rocks and some rocks found on Earth. During the Apollo missions, astronauts brought back samples of moon rocks, which were carefully analyzed. These moon rocks were found to have a similar composition to certain types of rocks found on Earth, specifically basaltic rocks.
Scientists use radiometric dating techniques to determine the age of rocks. Radiometric dating relies on the decay of radioactive isotopes within the rocks, which occurs at a predictable rate. By measuring the ratio of parent isotopes to daughter isotopes in a rock sample, scientists can calculate how much time has passed since the rock formed.
Based on the radiometric dating of both moon rocks and certain rocks on Earth, scientists were able to establish an age of approximately 4.3 billion years for the Earth. This method provides a strong indication that the Earth is indeed billions of years old.