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WorksheetsEarth's History
Total questions: 20
Worksheet time: 36mins
What is the longest unit of time?
Eon
Era
Period
Epoch
What Era are we currently in?
Paleozoic
Mesozoic
Cenozoic
Triassic
Which Era was dominated by dinosaurs?
Paleozoic
Mesozoic
Cenozoic
Cambrian
Which segment of time is the smallest?
Eon
Era
Period
Epoch
Which rock layer is the youngest?
A
B
C
What do scientists think may have caused dinosaurs to become extinct?
competition between animals
climate change due to the asteroid hitting earth
disappearance of prey
competition from mammals
Which statement is true?
The oldest layers of rock and soil are closest to the surface of the earth
The youngest layers of rock and soil are farther away from the surface of the earth.
inclusions are younger than the layers they are found in
Absolute dating and relative dating are two methods used by scientists to determine the age and sequence of geologic events.
There have been how many major extinction events on planet Earth?
3
4
5
2
What are the names of ALL parts of the geologic time scale in correct order from broadest to narrowest?
era, period, eon
eon, era, period, epoch
era, eon, epoch, period
eon, era, epoch, period
90% of Earth’s history occurred during which era?
Precambrian
Paleozoic
Mesozoic
Cenozoic
Mammals are a dominant group in which era?
Cenozoic
Mesozoic
Paleozoic
Cambrianozoic
What era did the formation of the earth occur?
Paleozoic
Precambrian
Cenozoic
Cambrian
What are the four eras in order from OLDEST to NEWEST?
Pre-Cambrian, Paleozoic, Mesozoic, Cenozoic
Pre-Cambrian, Mesozoic, Paleozoic, Cenozoic
Cenozoic, Mesozoic, Paleozoic, Pre-Cambrian
Mesozoic, Pre-Cambrian, Cenozoic, Paleozoic
