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WorksheetsGeologic Time Scale
Total questions: 10
Worksheet time: 8mins
Name
Class
Date
1.
_______________ is the long span of time that begins geologic time.
a)
Precambrian Time
b)
Cenozoic Time
2.
A unit of geologic time that subdivides eras
a)
period
b)
time span
3.
The Triassic Period, the Jurassic Period, and the Cretaceous Period occurred in what era?
a)
Cenozoic
b)
Mesozoic
4.
_________ for many of the geologic periods come from places around the world where geologists first described the rocks and fossils of the period.
a)
time
b)
names
5.
Scientists chose where units of geologic time began on major changes in ______________ at certain times.
a)
life forms
b)
events
6.
Scientists divided the time between Precambrian Time and the present into three units of time, or eras.
a)
True
b)
False
7.
To develop the geologic time scale, scientists studied rock layers and fossils from the different eras.
a)
True
b)
False
8.
Eras are subdivided into units of geologic time called periods.
a)
True
b)
False
9.
___________ a record of the geologic events and the evolution of life forms as shown in the fossil record.
a)
Eras
b)
Geologic Time Scale
10.
The Quaternary period, where humans first appeared, is in the Mesozoic era.
a)
True
b)
False
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