Earth History assessment 1

Flashcard
•
Science
•
10th Grade
•
Hard
+3
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an index fossil?
Back
An index fossil is a fossil that is used to define and identify a particular time period in the geologic time scale. It is typically widespread, abundant, and existed for a relatively short duration.
Tags
NGSS.MS-ESS1-4
2.
FLASHCARD QUESTION
Front
What geologic period is associated with trilobite fossils?
Back
Trilobite fossils are primarily associated with the Paleozoic Era, particularly the Cambrian to the Permian periods.
Tags
NGSS.MS-LS4-1
3.
FLASHCARD QUESTION
Front
What does the presence of trilobite fossils indicate about past environments?
Back
The presence of trilobite fossils indicates that the area was once covered by shallow marine environments, as trilobites were marine organisms.
Tags
NGSS.MS-LS4-1
4.
FLASHCARD QUESTION
Front
What is the significance of the Devonian period in Earth history?
Back
The Devonian period, often referred to as the 'Age of Fishes', is significant for the diversification of fish and the first appearance of amphibians.
Tags
NGSS.MS-LS4-1
NGSS.MS-LS4-2
5.
FLASHCARD QUESTION
Front
What is a half-life in radioactive decay?
Back
A half-life is the time required for half of the radioactive atoms in a sample to decay into a stable form.
Tags
NGSS.HS-PS1-8
6.
FLASHCARD QUESTION
Front
How can the rate of decay of a radioactive isotope be represented?
Back
The rate of decay can be represented graphically, showing the ratio of remaining radioactive atoms to the decay products over successive half-lives.
Tags
NGSS.HS-PS1-8
7.
FLASHCARD QUESTION
Front
What is a fault in geological terms?
Back
A fault is a fracture or zone of fractures in the Earth's crust along which movement has occurred.
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