Absolute Dating

Question 1

What have you learned about radioactive dating? Check all that apply.Unstable atoms release particles.The radioactive decay of an element occurs at a constant rate.A half-life is half of the lifetime of a radioactive element.At one half-life, half of the original unstable element has decayed.All elements are radioactive.

Revolt · Accepted Answer

A: Unstable atoms release particles.; B: The radioactive decay of an element occurs at a constant rate.; D: At one half-life, half of the original unstable element has decayed.

Question 2

Radioactive dating can be compared to an hourglass, with the elements on the top.

Revolt · Accepted Answer

B: unstable

Question 3

Scientists compare in the rock to determine its age.

Revolt · Accepted Answer

B: parent and daughter elements

Question 4

Which statements about carbon-14 dating are true? Check all that apply.Carbon-14 decays into nitrogen-14.Carbon-14 has a longer half-life than potassium-40.Once a living thing dies, it no longer takes in carbon.Carbon-14 dating is used to date very old volcanic rock.Carbon-14 dating works for fossils as old as 50,000 years.

Revolt · Accepted Answer

A: Carbon-14 decays into nitrogen-14.; C: Once a living thing dies, it no longer takes in carbon.; E: Carbon-14 dating works for fossils as old as 50,000 years.

Question 5

Potassium-argon dating is ideal for dating and rock.

Revolt · Accepted Answer

A: ancient

Question 6

Potassium-argon dating is ideal for dating and rock.

Revolt · Accepted Answer

B: igneous

Absolute Dating Answers

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