
Ch 8, The Rock Record Re Flashcard
Flashcard
•
Social Studies
•
6th - 12th Grade
•
Practice Problem
•
Hard
Wayground Content
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29 questions
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1.
FLASHCARD QUESTION
Front
The time required for half of a sample of a radioactive isotope to break down by radioactive decay to form a daughter isotope is called what?
Back
half-life
2.
FLASHCARD QUESTION
Front
The trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock
Back
fossil
3.
FLASHCARD QUESTION
Front
Which of the following is a method of determining the absolute age of an object by comparing the relative percentages of a radioactive (parent) isotope and a stable (daughter) isotope? Options: radiometric dating, uniformitarionism, law of superposition, paleontology
Back
radiometric dating
4.
FLASHCARD QUESTION
Front
A principle that geologic processes that occurred in the past can be explained by current geologic processes is called...
Back
uniformitarianism
5.
FLASHCARD QUESTION
Front
The age of an object in relation to the ages of other objects is known as what?
Back
relative age
6.
FLASHCARD QUESTION
Front
What is the scientific study of fossils called?
Back
paleontology
7.
FLASHCARD QUESTION
Front
The principle that a sedimentary rock layer is older than the layers above it and younger than the layers below it if the layers are not disturbed is called ...
Back
law of superposition
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