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How did geologists determine the divisions of the geologic time scale?
Mainly abrupt changes in mineral layers or the fossils in them.
The Geologic Time Scale placed Earth's rocks in order by what?
In the order of time.
How do humans relate to geologic time scale?
in the scope of geologic time, how significant is the presence of humans?
What is the main evidence that supports the geologic time scale?
Measured rates of erosion.
What are the basic divisions of the Geologic Time Scale from larger to small?
eras and periods
What methods did geologists use when they first developedthe geologic time scale?
Scientists first developed the geologic time scale by studying rock layers and index fossils worldwide. With this info. (information if you forget!), scientists placed Earth's rocks in order by the relative age.
What methods did geologist used when they first developed the geologic time scale?
The methods the geologists used when they first developed the geologic time scale. Were studying rock layers and index fossils worldwide. By Patrick
What did scientists study to develop the geologic time scale?
Scientists studied the layers of rock formations, fossils, and radioactive dating techniques to develop the geologic time scale. By analyzing the relative ages of rocks and fossils, as well as the decay of radioactive elements within them, scientists were able to divide Earth's history into distinct time periods.
What do scientists use to mark boundaries in the geologic time scale?
I'm thinking it's index fossils because index fossils tell when or how old the layer it was found in. If that's what your asking.
Which of the following is most accurate in helping pinpoint a time period on the geologic time scale during which a rock layer was formed?
Fossils found in the rock layer are the most accurate method for pinpointing a time period on the geologic time scale. By identifying the specific types of fossils present, scientists can determine the age of the rock layer relative to the known age ranges of those fossils.
Why is the geologic time scale used the show earth's history?
becase scientists use it to place history in order
Scientists think humans first appeared in the of the geologic time scale?
Humans
What kind of scientists worked with geologist to develope the geologic time scale?
biologists
What information does the geologic time scale provided and what are the major divisions of time?
The information the geologic scale provides is animals and fossils over time and periods. Major divisions of time is called eras.
How did geologists determine the divisions of the geologic time scale?
Mainly abrupt changes in mineral layers or the fossils in them.
What kind of scientists worked with geologist's to develop the geologic time scale?
biologists
What kind of scientists worked with geologist to develop the geologist to develop the geologic time scale?
Paleontologists, stratigraphers, and geochronologists worked with geologists to develop the geologic time scale. Paleontologists studied fossil evidence, stratigraphers looked at the layers of rock formations, and geochronologists used radiometric dating techniques to determine the age of rocks and fossils.
