Dating

Flashcard
•
Science
•
7th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the Principle of Superposition?
Back
The Principle of Superposition states that in an undisturbed sequence of rock layers, the oldest layer is at the bottom and the youngest layer is at the top.
2.
FLASHCARD QUESTION
Front
What is absolute age?
Back
Absolute age is the numerical age, in years, of any object or rock layer.
3.
FLASHCARD QUESTION
Front
What are index fossils?
Back
Index fossils are fossils used to define and identify a particular time period in the geological time scale.
4.
FLASHCARD QUESTION
Front
What traits make a good index fossil?
Back
A good index fossil is widespread geographically and has a short lifespan.
5.
FLASHCARD QUESTION
Front
How do index fossils help in determining relative age?
Back
Index fossils help determine relative age by correlating rock layers across different locations.
6.
FLASHCARD QUESTION
Front
What is relative age?
Back
Relative age is the age of an object or rock layer in comparison to another object or rock layer.
7.
FLASHCARD QUESTION
Front
What is the significance of rock layers in geology?
Back
Rock layers provide a record of Earth's history, including the sequence of events and the age of different geological formations.
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