Geologic Time Scale
Flashcard
•
Science
•
7th - 8th Grade
•
Practice Problem
•
Hard
+3
Standards-aligned
Wayground Content
FREE Resource
Student preview
15 questions
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1.
FLASHCARD QUESTION
Front
What is the Geologic Time Scale?
Back
A system of chronological dating that relates geological strata to time, used by geologists and other Earth scientists to describe the timing and relationships of events in Earth's history.
Tags
NGSS.MS-ESS1-4
2.
FLASHCARD QUESTION
Front
What are the main divisions of the Geologic Time Scale?
Back
Eons, Eras, Periods, Epochs.
Tags
NGSS.MS-ESS1-4
3.
FLASHCARD QUESTION
Front
What is an igneous intrusion?
Back
A body of igneous rock that forms when magma cools and solidifies within the Earth's crust.
4.
FLASHCARD QUESTION
Front
Which layer of rock is typically the youngest?
Back
The layer that is on top in a sequence of sedimentary rocks, as younger layers are deposited over older ones.
Tags
NGSS.MS-ESS1-4
5.
FLASHCARD QUESTION
Front
What is catastrophism in geology?
Back
The theory that Earth's features are shaped by sudden, short-lived, and violent events, such as meteor impacts or volcanic eruptions.
Tags
NGSS.MS-ESS3-2
6.
FLASHCARD QUESTION
Front
What is uniformitarianism?
Back
The principle that the same geological processes that operate today also operated in the past, shaping the Earth over long periods.
Tags
NGSS.MS-LS4-1
7.
FLASHCARD QUESTION
Front
What is the significance of fossils in the Geologic Time Scale?
Back
Fossils provide evidence of past life and help to date the layers of rock in which they are found.
Tags
NGSS.MS-ESS1-4
NGSS.MS-LS4-1
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