Absolute Dating

Flashcard
•
Science
•
9th - 10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is Absolute Dating?
Back
A method used to determine the exact age of an object or fossil by measuring the decay of radioactive isotopes.
2.
FLASHCARD QUESTION
Front
What element is commonly used in Absolute Dating for organic materials?
Back
Carbon-14.
3.
FLASHCARD QUESTION
Front
What is the Half-life of a radioactive isotope?
Back
The time required for half of the radioactive atoms in a sample to decay.
4.
FLASHCARD QUESTION
Front
What is the half-life of Carbon-14?
Back
Approximately 5,730 years.
5.
FLASHCARD QUESTION
Front
What is the half-life of Potassium-40?
Back
1.3 billion years.
6.
FLASHCARD QUESTION
Front
If a sample has a half-life of 10 seconds, how much of the original sample remains after 20 seconds?
Back
25% of the original sample remains.
7.
FLASHCARD QUESTION
Front
What is a parent isotope?
Back
The original radioactive isotope that undergoes decay.
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