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WorksheetsREVIEW: Geologic Time
Total questions: 20
Worksheet time: 11mins
How old do Paleontologists believe the Earth is?
2019 years old
3.6 billion years old
4.6 billion years old
4.6 million years old
What type of event usually marks the end of an Era
A Mass Extinction
A Quinceanera
An earthquake
A Volcanic Eruption
What are the names of ALL parts of the geologic time scale in correct order from broadest to narrowest?
era, period, eon
eon, era, period, epoch
era, eon, epoch, period
eon, era, epoch, period
What does absolute age tell us about a rock layer or fossil?
The 'exact' age of a fossil determined by radiometric dating
The relative age of a fossil determined by radiometric dating
Younger rock layers sit on top of older rock layers
Older rock layers sit on top of younger rock layers
Which era is the most recent, the one that we are currently in?
Mesozoic
Paleozoic
Cenozoic
Precambrian
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
Which Rock Layer is the oldest?
A
B
C
D
Which of the following represents the largest period of time.
Era
Epoch
Period
Eon
Which of the following represents the shortest period of time.
Era
Epoch
Period
Eon
If the same index fossils are found in different rock strata miles apart, what is probably true about rock layers?
The rock layers nearest the equator are the oldest.
The rock layers are the same age.
The rock layers nearest the poles of the earth are the oldest.
The index fossils don't tell us anything about the rock layers.
Jellyfish are one of the oldest species on Earth. In what time period does science say they first appear?
Precambrian Era
Paleozoic Era
Mesozoic Era
Cenozoic Era
In what Epoch are we currently in?
Cenozoic
Pliocene
Quaternary
Holocene
This timeline of Earth's history is out of order. Rearrange each event so the order is correct, with the oldest event at the left of the timeline.
Gravity pulls together leftover matter from the formation of the Sun. Lots of objects nearby are crashing into each other. Earth is very hot, and mostly made of molten (melted) rock. Nothing is living here yet.
Earth starts to cool down, and its atmosphere, or outer layer of air, starts to form. Oceans and small, single-celled life forms like bacteria start to form, too.
More complex multi-celled life forms, such as underwater plants, start to develop.
Complex sea life, such as fish and other underwater animals, start to spread. The first trees start to appear on land, too.
Dinosaurs everywhere! Lots of large land plants, too, and we start to see huge forests.
What do scientists typically use to determine when a geologic time period starts and ends? Choose 3 answers.
fossil record
mass extinction
appearance of many new species
flipping a coin
using an internet random time generator
