WorksheetsGeologic Time Scale
Total questions: 10
Worksheet time: 2mins
What is the branch of science that literally means "the study of the Earth"?
biology
geology
history
paleontology
Paleontologists infer that the earth is approximately how many years old?
4.5 billion years old
4.5 million years old
450 billion years old
450 million years old
The “calendar” for events in Earth history. It subdivides all time into units of abstract time called eons, eras, periods, epochs, and ages.
Gregorian calendar
Geologic time scale
Precambrian
Time period
Put the following units of geological time in order from largest to smallest unit of geologic time.
eon,
era,
period,
epoch
Phanerozoic,
Proterozoic,
Archean,
Hadean
epoch,
period,
era,
eon
Hadean,
Archean,
Proterozoic,
Phanerozoic
It is the Earliest Age of Earth's Geologic History and the longest as it includes approximately 80-90% of Earths Entire History.
precambrian
paleozoic
mesozoic
cenozoic
Fossils provide evidence of __________.
how life and the environment has remained stable over time
how the climate and weather has remained stable over time
how life and the environmental conditions have changed over time
how animals adapt to their changing environment
Best known as era of middle life and age of reptiles and dinosaurs.
precambrian
paleozoic
mesozoic
cenozoic
Best known as era of ancient life and the age of marine life.
precambrian
paleozoic
mesozoic
cenozoic
Which era is the most recent, the one that we are currently in?
cenozoic
mesozoic
paleozoic
precambrian
This clock represents the entire history of Earth in a 24-hour span. At what time did humans make their first appearance?
9:04 PM
8:48 PM
11:58 PM
10:56 PM
