Geo: Relative Age
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the Law of Superposition?
Back
The Law of Superposition states that in undisturbed sedimentary rock layers, the oldest layers are at the bottom and the youngest layers are at the top.
2.
FLASHCARD QUESTION
Front
What are index fossils?
Back
Index fossils are fossils of organisms that were widespread but only existed for a short period of geologic time, used to date and correlate the age of rock layers.
3.
FLASHCARD QUESTION
Front
What is relative age in geology?
Back
Relative age is the age of a rock or fossil in comparison to other rocks or fossils, determining which is older or younger without assigning a specific numerical age.
4.
FLASHCARD QUESTION
Front
Why do most fossils form in the ocean?
Back
Most fossils form in the ocean because sedimentary rocks, which often contain fossils, are primarily formed in aquatic environments where organisms can be buried quickly.
5.
FLASHCARD QUESTION
Front
What is a paleontologist?
Back
A paleontologist is a scientist who studies fossils to understand the forms of life that existed in the past.
6.
FLASHCARD QUESTION
Front
What is the significance of the oldest rock layer?
Back
The oldest rock layer typically contains the oldest fossils, providing insight into the earliest forms of life on Earth.
7.
FLASHCARD QUESTION
Front
How do scientists determine the relative age of rock layers?
Back
Scientists determine the relative age of rock layers using principles like the Law of Superposition, fossil correlation, and the presence of index fossils.
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