Earth History Review 2022-23
Flashcard
•
Science, Biology
•
8th Grade
•
Hard
Wayground Content
FREE Resource
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the process by which fossil bones of a dinosaur are formed?
Back
The dinosaur was covered in sediment.
2.
FLASHCARD QUESTION
Front
According to the law of __________, in horizontal sedimentary rock layers the oldest layer is at the bottom and the youngest layer is at the top.
Back
Superposition
3.
FLASHCARD QUESTION
Front
What is it called when a variation in a species has a favorable trait that helps it survive, while the less favorable variation dies out?
Back
Natural selection.
4.
FLASHCARD QUESTION
Front
What is absolute age?
Back
The exact age of a rock or fossil.
5.
FLASHCARD QUESTION
Front
What is an adaptation?
Back
A trait that helps an organism survive its environment.
6.
FLASHCARD QUESTION
Front
What is the significance of sediment in fossil formation?
Back
Sediment can cover and preserve remains, leading to fossilization.
7.
FLASHCARD QUESTION
Front
Define 'index fossil'.
Back
A fossil that is used to define and identify a particular time period.
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