Absolute vs Relative Dating

Flashcard
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Science
•
9th - 12th Grade
•
Hard
Standards-aligned
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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 a rock or fossil in years, often using radiometric techniques.
2.
FLASHCARD QUESTION
Front
What is Relative Dating?
Back
A technique used to determine the age of rocks or fossils in relation to other rocks or fossils, without providing a specific age.
3.
FLASHCARD QUESTION
Front
What is a Half-Life?
Back
The time required for half of the radioactive atoms in a sample to decay into a daughter isotope.
Tags
NGSS.HS-PS1-8
4.
FLASHCARD QUESTION
Front
What is Carbon-14 Dating?
Back
A method of dating organic materials by measuring the amount of carbon-14 remaining in a sample.
5.
FLASHCARD QUESTION
Front
How much Carbon-14 remains after one half-life?
Back
50% of the original amount.
Tags
NGSS.HS-PS1-8
6.
FLASHCARD QUESTION
Front
If you start with 100 grams of a substance with a half-life of 10 years, how much will remain after 20 years?
Back
25 grams.
7.
FLASHCARD QUESTION
Front
Why is Carbon-14 useful for dating?
Back
It is present in living organisms and decays at a known rate, allowing scientists to date organic materials up to about 50,000 years old.
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