Law of Superposition
Flashcard
•
Science
•
7th Grade
•
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 is an unconformity in geology?
Back
An unconformity is a break or gap in the geologic record that occurs when rock layers are eroded over time, resulting in the loss of some rock layers.
3.
FLASHCARD QUESTION
Front
How can you determine the relative ages of rock layers?
Back
You can determine the relative ages of rock layers by using the Law of Superposition, where the position of the layers indicates their age.
4.
FLASHCARD QUESTION
Front
What does it mean if a rock layer is tilted?
Back
If a rock layer is tilted, it means that geological forces have altered its original horizontal position, indicating a change in the environment after its deposition.
5.
FLASHCARD QUESTION
Front
What is the significance of the oldest rock layer in a sequence?
Back
The oldest rock layer provides important information about the Earth's history and the conditions that existed at the time of its formation.
6.
FLASHCARD QUESTION
Front
What is the difference between deposition and erosion?
Back
Deposition is the process of sediment settling and accumulating in layers, while erosion is the process of wearing away and removing rock and soil.
7.
FLASHCARD QUESTION
Front
What is a fault in geology?
Back
A fault is a fracture or zone of fractures in the Earth's crust along which movement has occurred, often causing displacement of rock layers.
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