Question

Compared to the age of the Universe of about 14 billion years, the currently accepted age of Earth is about ________ years as determined by using radioactivity for dating rocks and minerals.

A) 4.6 thousand
B) 4.6 billion
C) 5.4 million
D) 13.7 billion

Answer 1

The age of Earth is approximately 4.6 billion years, as established through radiometric dating of rocks and minerals.

Step-by-step explanation:

Compared to the age of the Universe of about 14 billion years, the currently accepted age of Earth is about 4.6 billion years as determined by using radioactivity for dating rocks and minerals. The correct answer is B) 4.6 billion years. Radiometric dating has been used to determine that the oldest known rocks on Earth are between 4 and 5 billion years old, and evidence from various Earth-bound and solar system materials supports the approximate age of Earth as 4.5 billion years.