Collect information about carbon dating method. Discuss with your physical science teacher.

Explanation

1. Carbon dating is the method used to calculate the age of rocks, minerals or fossils.
2. Carbon dating method was devised by Libby in 1949 and won the nobel prize in Chemistry.
3. C14 is called radio carbon which is present in the atmosphere emits rays (beta rays) and becomes non radio active (C12 ) at a contant rate
4. It 's half life is about 5720 years.
5. C14 enters the plat during photosynthesis and fixes as carbohydrates. These plants are eatenup by animals. hence the concentration of C14 in plant and animal tissues is same as that of atmosphere
6. C14 enters the plants and animals as long as they are alive, but soon as they die no more C14 enters their bodies.
7. when an organism dies, it contains the standard ratio of C14 to C12 but as the C14 decays with the possiility of replenishment the proportion of C14 decreases at a known constant rate.
8. The measurement of the remaining amount of C14 in organic matter thus gives an estimate of the age of radio carbon.