To Determine the Age of Fairly Recent Fossils and Organic

question 36

Multiple Choice

To determine the age of fairly recent fossils and organic artifacts, it is possible to analyze the amounts of the isotopes ¹⁴C and ¹⁴N, because over time the ¹⁴C-which originated in the atmosphere-breaks down into ¹⁴N. What net change occurred for this to happen?

• A) The ¹⁴C lost an electron.
• B) The ¹⁴C gained an electron.
• C) The ¹⁴C lost a proton.
• D) The ¹⁴C gained a proton.
• E) The ¹⁴C gained a neutron.

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Definitions:

Red Scare

A period of intense fear of communism and radical political ideologies in the United States, especially prominent after World War I and during the Cold War.

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Work stoppages and labor strikes that occur after the end of a war, often due to economic and social unrest.

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Individuals who secretly work on behalf of a communist government or organization to spread communism, gather intelligence, or influence the politics of other nations.

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An amendment to the United States Constitution that granted American women the right to vote, ratified in 1920.