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WorksheetsEarth's History
Total questions: 21
Worksheet time: 25mins
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 era is the first era represented with fossils?
Paleozoic
Mesozoic
Cenozoic
Which rock layer is the youngest?
A
B
C
Which rock layer is the oldest?
A
C
D
F
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
Fossil lived the longest?
plant
Trilobite
Ammonite
bird
What type of event usually marks the end of an Era
A Mass Extinction
A Quinceanera
An earthquake
A Volcanic Eruption
Which era is the most recent, the one that we are currently in?
Mesozoic
Paleozoic
Cenozoic
Precambrian
Which era ended in the largest mass extinction on the time scale?
Paleozoic
Mesozoic
Cenozoic
