# Carbon Dating

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• Carbon Dating﻿
• The origin of many fossils can be﻿ determined by a process called Carbon Dating. This is done by figuring out the amount of Carbon-14 in a specific sample of a fossil through lab tests.
• The decay of a certain thing over time, to half of its original value is called a half-life. Half-lifes are used to figure out the the time of existence for the fossil by knowing the initial amount of Carbon-14 and the current amount.
• Half Life of Carbon 14: 5,730 years
• Half-Life Formula:﻿
• This formula helps determine the approximate age of an item, based on the amount of Carbon-14﻿ in that item using the given half life of Carbon-14.
• To find out the age of an object you take the current amount of Carbon-14 and divide it by the initial value. Then ﻿you multiply both side of the equation by log, divide each side by -.3 and then multiply your answer by 57. You would then subtract this number from the current year.
• ﻿A = A0(1/2)
• t/h﻿
• ﻿If your final answer is between 3000 BC and 31 BC, it is possibly that the fossil is from Ancient Egypt.
• If your final answer is between 753 BC and 476 CE, it is possible that the fossil is from Ancient Greece/Rome
• If your final answer is between 2070 BC and 256 B,C, it is possible that the fossil is from Ancient China.﻿
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