MS-ESS1-4: Geologic Time and Fossils
Flashcard
•
Science
•
6th - 8th Grade
•
Easy
Barbara White
Used 2+ times
FREE Resource
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21 questions
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1.
FLASHCARD QUESTION
Front
Geologic time Noun
[jee-oh-loj-ik tahym]
Back
Geologic time
The vast period of time covering Earth's history, from its formation to the present, estimated to be 4.6 billion years.
Example: Fossil layers in the ground show different periods in Earth's history.
2.
FLASHCARD QUESTION
Front
Fossil Noun
[fos-uhl]
Back
Fossil
The preserved evidence of ancient life, such as remnants, marks, or traces of life-forms that are trapped in rock.
Example: A fossil of an ancient creature preserved in rock, showing evidence of past life.
3.
FLASHCARD QUESTION
Front
Body fossil Noun
[bod-ee fos-uhl]
Back
Body fossil
A type of fossil formed from the actual hard parts of an organism, such as its shells, bones, and teeth.
Example: This image shows a body fossil of an ammonite shell, illustrating the preserved hard parts of an organism.
4.
FLASHCARD QUESTION
Front
Trace fossil Noun
[treys fos-uhl]
Back
Trace fossil
A type of fossil that preserves evidence of an organism's activities, such as its tracks, burrows, or impressions.
Example: A dinosaur footprint preserved in rock shows evidence of its activity, illustrating a trace fossil.
5.
FLASHCARD QUESTION
Front
Sedimentary rock Noun
[sed-uh-men-tuh-ree rok]
Back
Sedimentary rock
Rock formed from particles of gravel, sand, and mud that settle and build up in layers, often containing fossils.
Example: Sedimentary rock forms from layers of particles like gravel and sand settling over time.
6.
FLASHCARD QUESTION
Front
Relative dating Noun
[rel-uh-tiv dey-ting]
Back
Relative dating
The method of determining the comparative age of rock layers or fossils without finding their specific absolute age.
Example: The image shows rock layers with different sediments, helping to understand the sequence of deposition in relative dating.
7.
FLASHCARD QUESTION
Front
Principle of Superposition Noun
[prin-suh-puhl of soo-per-puh-zish-uhn]
Back
Principle of Superposition
The scientific rule stating that in undisturbed sedimentary rock layers, the lower layers are older than the layers above them.
Example: The image shows sedimentary rock layers, with the oldest at the bottom, demonstrating the Principle of Superposition.
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