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WorksheetsWarm-up: Geologic Time Scale
Total questions: 12
Worksheet time: 22mins
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
What type of event usually marks the end of an Era
A Mass Extinction
A Quinceanera
An earthquake
A Volcanic Eruption
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
Which era is the most recent, the one that we are currently in?
Mesozoic
Paleozoic
Cenozoic
Precambrian
Scientists chose where units of geologic time began and ended based on the appearance or disappearance of life.
true
false
The dinosaurs and reptiles were dominant in which Era?
Precambrian
Mesozoic
Paleozoic
Cenozoic
90% of Earth’s history occurred during which era?
Precambrian
Paleozoic
Mesozoic
Cenozoic
At the end of this era, multi-cellular organisms like sponges, jellyfish and worms filled the oceans.
Precambrian Era
Paleozoic Era
Mesozoic Era
Cenozoic Era
Which graph shows the relative duration of geologic time for Earth's history?
1
2
3
4
Dinosaurs were living during Mesozoic, Triassic and Jurassic eras and eventually became extinct during the Cretaceous period. In all of these eras dinosaur fossils were found. What does this evidence tell scientists about how natural processes have changed Earth over time?
Dinosaurs fossils in varying rock layers show that as the population changed they were fossilized in different rock layers by Earth’s natural processes.
Dinosaur fossils take a long time to form and demonstrate how long the natural processes take to change the
Earth
Dinosaur fossils are formed within layers of sedimentary rock that were laid down by natural Earth processes which
no longer occur today showing how Earth has changed.
A model scientists use to describe the timing of events and the relationships between those events in earth’s history.
geologic time scale
era
period
epoch
