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What is the shortest piece of geologic time?
The shortest piece of Geologic time is the Holocene Epoch in the Cenozoic Era>
How are the subdivisions of geologic time relate to one another?
they all connect
How paleontologists use trilobites fossils as index fossils for various geologic time periods?
Trilobites were rapidly evolving and widespread marine organisms that spanned a number of geologic time periods. Certain types of trilobites only appeared in specific segments of geologic time; therefore, when one of these trilobites is found, you can be certain that the rock layer it is found in is of a certain geologic age.
Is one million years sufficiently long to be considered a period of geologic time?
Yes, one million years is a significant period in geologic time. It is equivalent to 1/485th of the age of the Earth (4.54 billion years). In the geologic time scale, it falls within the Quaternary period, which includes the most recent 2.6 million years of Earth's history.
What 3 things usually happen to signal a change from one geologic time interval to another?
These 3 things usually happen to signal a change from one geologic time interval to another...rocks changeclimate changesdisappearances or appearances of life
How did geologists determine the division of the geologic time scale?
Geologists determined the division of the geologic time scale through the study of rock layers and the fossils contained within them. By examining the different types of fossils and their distribution in the rock record, geologists were able to identify distinct time periods based on changes in the Earth's environment and the evolution of life forms. This process of relative dating helped establish the framework for the geologic time scale.
How do paleontologist use trilobite as index fossil for various geologic periods?
Trilobites were rapidly evolving and widespread marine organisms that spanned a number of geologic time periods. Certain types of trilobites only appeared in specific segments of geologic time; therefore, when one of these trilobites is found, you can be certain that the rock layer it is found in is of a certain geologic age.
What is the shortest interval of geologic time?
The shortest interval of geologic time is a nanosecond, which is one billionth of a second. It is used in some specialized fields of geology and geochronology to measure very rapid geological events or processes.
What the geologic column?
It is an imaginary column where are the ages of rocks sit on top of one another in their proper age sequence, oldest at the base and youngest at the top. An ideal sequence of rock layers that contains all the known fossils and rocks whith each sequence is given its name.
What ways can you apply your learning in density column?
To build density column, slowly pour liquids into the container, one at a time.
How do paleontologist use trilobites as index fossils for various geological time periods?
Trilobites were rapidly evolving and widespread marine organisms that spanned a number of geologic time periods. Certain types of trilobites only appeared in specific segments of geologic time; therefore, when one of these trilobites is found, you can be certain that the rock layer it is found in is of a certain geologic age.
Was a rattlesnake one of the first reptiles?
No, rattlesnakes are a fairly recent family of reptiles to develop, at least when one looks at geologic time.
