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WorksheetsGeological Time Scale
Total questions: 19
Worksheet time: 16mins
In which time period are we currently living?
Precambrian Time
Paleozoic Era
Mesozoic Era
Cenozoic Era
Which fossil is the youngest?
fossil A
fossil B
fossil C
fossils A and B are the same age
Uses the decay of radioactive elements to find the ___________________________ of a rock or fossil.
Relative age
Absolute age
New age
Real Age
Division of periods in geological history
Eons
Epoch
Era
Law of Superposition
Chronological chart that shows the events and past lives of organisms in Earth's history.
Geological Time Scale
Cambrian Explosion
Eon
Era
These specialized fossils indicate to geologists the boundaries in geological time and determine the age of rocks.
Index fossils
Limestone fossils
Amber fossils
Cast fossils
In which of the following eras did humans first appear in the fossil record?
Precambrian
Paleozoic
Mesozoic
Cenozoic
The second broadest category of geologic time is______________?. The Cenozoic is one of them.
era
eon
epoch
period
Which layer is OLDER? Fault E or Intrusion D?
Fault E
Intrusion D
When did the age of mammals begin?
End of Mesozoic Era when dinosaurs died.
After the Cambrian explosion
After Lunch
The end of the Cenozoic
The geologic time scale is divided into four large units known as
Eras
Periods
Eons
Units
Jellyfish are one of the oldest species on Earth. In what time period did they first appear?
Precambrian Time
Paleozoic Era
Mesozoic Era
Cenozoic Era
The end of life for a group of organisms, usually a species, is called a(n) ________________.
Extinction
Retirement
Endangerment
Catastrophe
In what time period did Pangaea, the super continent, appear?
Precambrian Time
Paleozoic Era
Mesozoic Era
Cenozoic Era
