You Are an Archaeologist Researching Artifacts Left Behind by Francisco

question 32

Multiple Choice

You are an archaeologist researching artifacts left behind by Francisco Pizzaro's conquest of Peru in the 1530s.In order to confirm the authenticity of the leather artifacts, you are performing radiometric dating using an isotope pair that has a half-life of 250 years.In order for the artifacts to date back to the time of Pizzaro's conquest, approximately how much original radioactive isotope must be left in the artifacts?

• A)50%
• B)25%
• C)75%
• D)12.5%

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Definitions:

Sequential Method

A combination of the cross-sectional and longitudinal design to study developmental research questions.

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An individual's subjective evaluation of their own worth, encompassing beliefs and emotions about oneself.

Age Cohorts

Groups of individuals who have shared a particular time experience, such as being born within the same time period, thus experiencing similar societal events at a similar age.

Developmental Psychologists

Specialists in psychology who study the growth and development of the human mind and behavior across the lifespan, from infancy through old age.