Podcast
Questions and Answers
What does the y-axis in the graph represent?
What does the y-axis in the graph represent?
What is the significance of the smooth curve in the graph?
What is the significance of the smooth curve in the graph?
After how many years does a sample with 3.125% Carbon-14 approximate?
After how many years does a sample with 3.125% Carbon-14 approximate?
If 6.25% of Carbon-14 remains, what fraction of the initial amount is left?
If 6.25% of Carbon-14 remains, what fraction of the initial amount is left?
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Flashcards
Half-life
Half-life
The time it takes for half of the radioactive atoms in a sample to decay into a different element.
Parent Atom
Parent Atom
The original, radioactive atom in a decay process (like carbon-14).
Daughter Atom
Daughter Atom
The atom that results from the decay of a parent atom.
Radioactive Decay
Radioactive Decay
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Beta Decay
Beta Decay
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Study Notes
Radioactive Decay of Carbon-14
- A rock sample contains 3.125% parent Carbon-14 atoms and 96.875% daughter atoms
- The graph displays the decay of Carbon-14 over time
- Locate 3.125% on the y-axis
- Follow the corresponding value to the curve on the graph
- The x-axis shows the approximate age of the sample
- Follow the line to the x-axis and note the value at that point
- By examining the graph, a sample with 3.125% Carbon-14 corresponds to an age of roughly 28,000 - 30,000 years
- This indicates approximately 2 to 3 half-lives have passed.
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Description
Test your understanding of the radioactive decay of Carbon-14 with this quiz. Analyze a rock sample's Carbon-14 composition using a graph and interpret its age based on percentage decay. Can you determine the time elapsed and understand the concept of half-lives?
