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The technique which scientists use today to determine when the earth first formed is called as Analysis of uranium and lead in meteorites.
The concepts of radiometric dating and their use in calculating the age of the Earth are explained by geologist Ralph Harvey and historian Mott Greene. As uranium decays in rocks, it produces subatomic particles and converts to lead at a steady pace. Measuring the uranium-to-lead ratios in the planet's oldest rocks gave scientists an estimate of 4.6 billion years.
The discovery of radioactivity at the turn of the century was a watershed moment. Scientists found that pebbles may literally be used as watches. Many chemical elements in rock exist in a variety of slightly different isotopes.
Certain isotopes are unstable and undergo radioactive decay, slowly and steadily converting into a new isotope molecule by molecule. The rate of decay for a given isotope is constant, and the time it takes for one-half of a particular isotope to decay is known as its radioactive half-life.
Every 100 million years, for example, around 1.5 percent of Uranium 238 will decay to lead. The age of a rock sample may be established by examining the ratio of lead to uranium in it. Scientists may "look" back in time using this technique, known as radiometric dating.
learn more about radiometric dating at https://brainly.com/question/8831242
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