What is absolute dating?
Geologic Time

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Science
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Absolute dating is the process of determining the age of an object in years using methods such as measuring the amount of radioactive isotopes present.
2.
FLASHCARD QUESTION
Front
What does the law of superposition state?
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.
3.
FLASHCARD QUESTION
Front
What is relative dating?
Back
Relative dating is the method of determining the age of an object or layer in comparison to other objects or layers.
4.
FLASHCARD QUESTION
Front
What is the significance of fossils in geologic time?
Back
Fossils provide evidence of past life and can help determine the relative ages of rock layers.
5.
FLASHCARD QUESTION
Front
What is the law of suspension?
Back
The law of suspension is a method used to determine the relative age of sedimentary layers based on their organization and position.
6.
FLASHCARD QUESTION
Front
What is radioactive dating?
Back
Radioactive dating is a method used to determine the age of an object by measuring the amount of a radioactive isotope and its decay rate.
7.
FLASHCARD QUESTION
Front
Why might fish fossils be found in a desert?
Back
Fish fossils may be found in a desert because millions of years ago, the area was once a lake where fish lived before geological changes turned it into a desert.
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