WorksheetsLab's Geologic Time Scale
Total questions: 10
Worksheet time: 20mins
the tool we use to organize Earth's events as they happened
era
law of superposition
geologic time scale
original horizontality
The Law of Superposition states
Younger rocks layers are on top of older rock layers
Fossils are found in sedimentary rocks
Older rock layers are on top of younger rock layers
Absolute age dating
Which period are we currently in?
Quaternary
Holocene
Jurassic
Tertiary
Which of the following periods occurred first (is the oldest)?
Cretaceous
Jurassic
Triassic
Permian
Which of the following is the most recent epoch (newest)?
Pleistocene
Paleocene
Eocene
Holocene
Miocene
The Phanerozoic eon began about _______ years ago.
542 m.y.a.
248 m.y.a.
2500 m.y.a.
4500 m.y.a.
1 m.y.a
Which era is the longest?
Cenozoic
Cambrian
Precambrian
Phanerozoic
The largest expanse of time on the geologic time scale is the
eon
epoch
era
period
Which of these was not in the Mesozoic Era?
Triassic Period
Silurian Period
Jurassic Period
Cretaceous Period
What is the oldest organism on the geologic time scale?
primitive horses
flowering plants
giant insects
trilobites
