Relative Dating Review
Flashcard
•
Science
•
9th - 12th Grade
•
Practice Problem
•
Hard
Wayground Content
FREE Resource
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15 questions
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1.
FLASHCARD QUESTION
Front
What is relative dating?
Back
Relative dating is a method used to determine the age of rocks and fossils in relation to one another, without determining their exact age.
2.
FLASHCARD QUESTION
Front
What is the principle of superposition?
Back
In a sequence of undisturbed sedimentary rocks, the oldest layers are at the bottom and the youngest layers are at the top.
3.
FLASHCARD QUESTION
Front
What does the term 'unconformity' refer to?
Back
An unconformity is a gap in the geological record that indicates a period of erosion or non-deposition.
4.
FLASHCARD QUESTION
Front
What is an igneous intrusion?
Back
An igneous intrusion is a body of igneous rock that forms when magma cools and solidifies within pre-existing rock layers.
5.
FLASHCARD QUESTION
Front
What is the principle of lateral continuity?
Back
The principle of lateral continuity states that layers of sediment initially extend laterally in all directions; they may be laterally continuous even if they are separated by erosion.
6.
FLASHCARD QUESTION
Front
What is the significance of inclusions in relative dating?
Back
Inclusions are fragments of one rock unit that are contained within another; the rock containing the inclusion is younger than the inclusion itself.
7.
FLASHCARD QUESTION
Front
What is the principle of crosscutting relationships?
Back
The principle of crosscutting relationships states that a geological feature (like a fault or intrusion) that cuts through another feature is younger than the feature it cuts.
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