What is an index fossil?
Fossils, Rocks, and Plate Tectonics

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Science
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
An index fossil is a fossil that is used to define and identify a particular time period in the geological time scale. It is typically widespread, abundant, and existed for a relatively short duration.
2.
FLASHCARD QUESTION
Front
What is the significance of the fossil record?
Back
The fossil record provides evidence of the history of life on Earth, showing how different species have evolved over time and how they relate to one another.
3.
FLASHCARD QUESTION
Front
What are the three main types of rocks?
Back
The three main types of rocks are igneous, sedimentary, and metamorphic.
4.
FLASHCARD QUESTION
Front
How do sedimentary rocks form?
Back
Sedimentary rocks form from the accumulation and compaction of mineral and organic particles, often in layers.
5.
FLASHCARD QUESTION
Front
What is plate tectonics?
Back
Plate tectonics is the scientific theory that describes the large-scale movement of Earth's lithosphere, which is divided into tectonic plates.
6.
FLASHCARD QUESTION
Front
What is a fault in geology?
Back
A fault is a break in Earth's crust along which rocks on either side have moved relative to each other.
7.
FLASHCARD QUESTION
Front
What is Pangaea?
Back
Pangaea was a supercontinent that existed during the late Paleozoic and early Mesozoic eras, which began to break apart about 200 million years ago.
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