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Half-Life and Ages of Rocks

Last updated almost 3 years ago
14 questions

This is the radioactive decay curve for Uranium-238 decaying into Lead-206.

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1

What is on the X Axis?

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What is on the Y Axis?

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1
Which is the parent? __________
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Which is the daughter? __________
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Use the graph to find the ages of rocks
Rock A has 88% of Uranium left. What is its age?

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Use the graph to find the ages of rocks
Rock B has 76% Uranium left. What is its age?

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Use the graph to find the % of Uranium in the rock
Rock C is 12 billion years old. What is the percentage of Uranium left in the rock_______
must include percent sign

This is the radioactive decay curve for Carbon 14 decaying into Nitrogen 14.

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1

What is on the X Axis?

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1

What is on the Y Axis?

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1
Which one is the parent?__________
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1
Which one is the daughter?__________
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1

Use the graph to find the ages of rocks
Rock D contains 30% of Carbon 14? What is the age of the rock?

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Use the graph to find the ages of rocks
'Human Bone A' contains 5% of Carbon 14? What is the age of the rock?

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Use the graph to find the % of Carbon 14 in the rock
'Human Bone B' is 30,000 years old. What is the percentage of Carbon 14 left in the rock_______