Radioactive Dating

Flashcard
•
Science
•
6th - 10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the Principle of Original Horizontality?
Back
It states that rock-forming materials are deposited in horizontal layers.
2.
FLASHCARD QUESTION
Front
What does the Principle of Uniformitarianism state?
Back
It states that geologic processes that occur today are similar to those that have occurred in the past.
3.
FLASHCARD QUESTION
Front
Who studies fossils?
Back
Paleontologists are scientists who study fossils.
4.
FLASHCARD QUESTION
Front
What is a Half-life?
Back
The time required for half of the parent isotope to decay into daughter isotopes.
5.
FLASHCARD QUESTION
Front
What does the Principle of Superposition explain?
Back
In undisturbed rock layers, the oldest rocks are on the bottom.
6.
FLASHCARD QUESTION
Front
What is Absolute Age?
Back
The actual age of a rock or fossil, determined by methods such as radioactive dating.
7.
FLASHCARD QUESTION
Front
What is Relative Age?
Back
The age of a rock or fossil in comparison to other rocks or fossils.
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