
Geologic Time Vocab
Flashcard
•
Science
•
8th - 9th Grade
•
Hard
Wayground Content
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18 questions
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1.
FLASHCARD QUESTION
Front
Oldest rocks at the bottom, younger rocks on top in undisturbed layers.
Back
Principle of superposition
2.
FLASHCARD QUESTION
Front
Remains, imprints, or traces of prehistoric organisms that indicate their existence and lifestyle.
Back
Fossils
3.
FLASHCARD QUESTION
Front
Time for half of a radioactive isotope to decay.
Back
Half-life
4.
FLASHCARD QUESTION
Front
Thin film of carbon residue preserved as a fossil.
Back
Carbon film
5.
FLASHCARD QUESTION
Front
Principle stating current Earth processes resemble those in the past.
Back
Uniformitarianism
6.
FLASHCARD QUESTION
Front
Calculating absolute age of rock by measuring parent isotope to daughter product ratio and knowing half-life.
Back
Radiometric dating
7.
FLASHCARD QUESTION
Front
Age of a rock or object, determined by material properties.
Back
Absolute age
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