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Exam 4: Dating Methods and Chronology

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Question 31

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The reason that radiocarbon dating results must be calibrated is that,contrary to what Libby assumed

A) the half-life of 14C samples from wet contexts is twice that of 14C samples from dry contexts
B) the concentration of 14C in the atmosphere has actually remained the same over time
C) the concentration of 14C in the atmosphere has actually varied over time
D) the concentration of 14C in the atmosphere has nothing to do with radiocarbon dating
E) the half-life of 14C has been seriously modified by pollution in the atmosphere

F) B) and E)
G) B) and D)

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Question 32

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When provided with a radiocarbon figure such as 3700 + 100 BP,the first number (3700)is the number of years before the year 1950.

A) True
B) False

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Question 33

Multiple Choice

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If a coin with a date on it is found in a sealed archaeological deposit,we know that the deposit can be no older than the date on the coin.In that situation the date on the coin represents

___________________ is another term for tree-ring dating which is based on the counting,measurement,and patterning of annual growth rings in known species of trees

Using differences in tree-rings to tie a wooden structure to a calendar date is an example of a relative dating technique.

Very briefly,identify and define three different absolute dating techniques.