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Home Page Science Earth Science Paleontology Cross Cutting Relationships Geo Ch 9 - Flashcards

Geo Ch 9 – Flashcards

Lisa Currey
8 July 2022
20 test answers

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question
What is a fossil?
answer
Evidence of past life that can include skeletal as well as trace material
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________ is a term used to define 88% of Earth's history prior to the start of the Paleozoic Era.
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Precambrian
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The fossil record is biased toward preserving organisms with hard parts.
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True
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A mammoth frozen in the Arctic tundra of Siberia would be an example of which type of fossilization?
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Mummification
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Match the relative dating principles with the correct definition. Unconformities
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Missing Time
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question
When correlating rock between widely separated areas or between continents, what feature do geologists rely on the most?
answer
Fossils
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question
Which era are we currently in?
answer
Cenozoic
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question
The first life on Earth developed during the Cambrian Period.
answer
False
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What is an index fossil?
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Organisms that were geographically widespread but limited to a short span of geologic time
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question
Match the relative dating principles with the correct definition. Lateral Continuity
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Rock extend in all directions until they reach the edge of a basin or pinch out
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Match the relative dating principles with the correct definition. Superposition
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The oldest is on the bottom, the youngest on top
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question
What is correlation?
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Matching up rocks of similar age in different regions
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question
In cast and mold fossilization, the cast is the hollow space in the rock that subsequently becomes filled with mineral matter.
answer
False
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question
Match the relative dating principles with the correct definition. Inclusions
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Chunks of weathered rock are older than the rock they are contained in
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question
A worm burrow is an example of which type of fossilization?
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Trace Fossil
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question
Match the relative dating principles with the correct definition. Cross-Cutting Relationships
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Faults, fractures are younger than the rocks they cut through
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question
What is the definition of relative dating?
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Putting events in order from first to last
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question
Match the relative dating principles with the correct definition. Original Horizontality
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Sedimentary layers/lava flows are deposited in flat layers
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question
Rapid burial is an important condition favoring preservation.
answer
True
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question
What is an isotope?
answer
An atom that has more or fewer neutrons than it should
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Question
What is the right structure for an essay
Answer
A paragraph is a related group of sentences that develops one main idea. Each paragraph in the body of the essay should contain:
  • a topic sentence that states the main or controlling idea
  • supporting sentences to explain and develop the point you’re making
  • evidence from your reading or an example from the subject area that supports your point
  • analysis of the implication/significance/impact of the evidence finished off with a critical conclusion you have drawn from the evidence.