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Worksheetsgeologic time
Total questions: 25
Worksheet time: 29mins
What is the Geologic Time Scale
How geologists divide Earth´s history
How biologists divide the evolution of life
How archeologists divide the fossil record
All are incorrect
What is the longest unit of time in the Geologic Time scale?
Era
Epoch
Period
Eon
What is an era?
a subdivision of eons
the longest division of eons
a subdivision of era
all are incorrect
What is Earth´s current era?
Paleozoic
Mesozoic
Cenozoic
Phanerozoic
What is a period?
a subdivision of eons
a subdivision of eras
a subdivision of epoch
all are incorretc
What is Earth´s current period?
Quaternary
Mesozoic
Cambrian
Cretaceous
What is an epoch?
A subdivision of period
a subdivison of eons
a subduvision of eras
All are incorrect
What type of evidence was used to construct the geologic time scale?
abrupt changes in the fossil record
small changes in the fossil record
the change in layer composition
geologists decide based on personal reasons
What is a possible event that could cause mass extinction?
Major volcanic eruptions
small earthquakes
Hurricanes
Big meteorite impact
What era did the formation of the earth occur?
Paleozoic
Precambrian
Cenozoic
Cambrian
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
What era did trilobites, fishes, and other marine organisms dominate?
Precambrian
Paleozoic
Mesozoic
Cenozoic
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
