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Geologic Time

Total questions: 35

Worksheet time: 2hrs 42mins

Name
Class
Date
1.
The Geologic Time Scale is a record of what?
a)

old geologists

b)

sweet geology music

c)

the known history of rocks and fossils

d)

a list of every living thing ever

2.
Which of the following statements about the fossil record is true?
a)

all organisms become fossils

b)

organisms having soft body parts make up most of the fossils

c)

all organisms that have shells become fossils

d)

the fossil record is incomplete

3.
A scientist who studies fossils is called a what?
a)

Fossilologist

b)

Rock Hound

c)

Archeologist

d)

Paleontologist

4.
How old do Paleontologists believe the Earth is?
a)

2015 years old

b)

3.6 billion years old

c)

4.6 billion years old

d)

4.6 million years old

5.
What type of rock do fossils form in?
a)

Igneous

b)

Sedimentary

c)

Metamorphic

d)

Classic

6.
Why is the fossil record incomplete?
a)

fossils get eroded away over time

b)

most organisms never became fossils

c)

scavengers and decomposers eat them too quickly

d)

all of the above

7.
Paleozoic, Mesozoic & Cenozoic are all
a)

Epochs

b)

Eras

c)

Periods

d)

Eons

8.
Which is the most recent era of time- the one that we are currently in?
a)

Mesozoic 

b)

Paleozoic 

c)

Cenozoic 

d)

Precambrian 

9.
Scientists chose where units of geologic time began and ended based on major changes in life forms at certain times.
a)
true
b)
false
10.
The dinosaurs and reptiles were dominant in which Era?
a)

Precambrian

b)

Mesozoic

c)

Paleozoic

d)

Cenozoic

11.
Known as the age of the mammals?
a)
Mesozoic Era
b)
Holocene Epoch
c)
Cenozoic Era
d)
Cambrian
12.
The disappearance of a species.
a)
Evolution
b)
Extinction
c)
Migration
d)
Mutation
13.

This period contained earliest insects

a)
Devonian
b)

Silurian

c)
Cambrian
d)
Cretaceous
14.

The Alleghany Uplands were formed during which era?

a)

Paleozoic

b)

Mesozoic

c)

Proterozoic

d)

Quaternary

15.
Which organism first appeared in the Mesozoic?
a)
Trilobites
b)
Dinosaurs
c)
Cyanobacteria
d)
Humans
16.
Which era ended with the K-T extinction, probably due to an asteroid?
a)
Paleozoic
b)
Phanerozoic
c)
Cenozoic
d)
Mesozoic
17.
Which era is the Cambrian period in?
a)
Cenozoic
b)
Mesozoic
c)
Paleozoic
d)
Hadean
18.
Which eon is the Mesozoic in?
a)
Phanerozoic
b)
Precambrian
c)
Cenozoic
d)
Cambrian
19.
Which era are we in now?
a)
Precambrian
b)
Mesozoic
c)
Paleozoic
d)
Cenozoic
20.
Woolly mammoths appeared in the
a)
Paleogene
b)
Quaternary
c)
Cretaceous
d)
Neogene
21.
Pangea broke up in the 
a)
Paleozoic
b)
Mesozoic
c)
Archean
d)
Cenozoic
22.
Which era is the longest?
a)
Cenozoic
b)
Cambrian
c)
Precambrian
d)
Phanerozoic
23.
What are the four eras in order from oldest to newest?
a)
Pre-Cambrian Time, Paleozoic Era, Mesozoic Era, Cenozoic Era
b)
Pre-Cambrian Time, Mesozoic Era, Paleozoic Era, Cenozoic Era
c)
Cenozoic Era, Mesozoic Era, Paleozoic Era, Pre-Cambrian Time
d)
Mesozoic Era, Pre-Cambrian Time, Cenozoic Era, Paleozoic Era
24.
During which era did vertebrates appear?
a)
Paleozoic Era
b)
Pre-Cambrian Time
c)
Mesozoic Era
d)
Cenozoic Era
25.
During which era did mammals first appear?
a)
Mesozoic Era
b)
Pre-Cambrian Time
c)
Paleozoic Era
d)
Cenozoic Era
26.
During which Era appeared the earliest fishes?
a)
Cenozoic
b)
Paleozoic
c)
Mesozoic
d)
Precambrian
27.
During which Era appeared the earliest flowering plants?
a)
Cenozoic
b)
Paleozoic
c)
Mesozoic
d)
Precambrian
28.
During which Era appeared the earliest Humans?
a)
Cenozoic
b)
Paleozoic
c)
Mesozoic
d)
Precambrian
29.
Eras of the geologic time scale are
divided into ______.
a)
periods
b)
ages
c)
units
d)
epochs
30.

Mammals are a dominant group in which era?

a)

Cenozoic

b)

Mesozoic

c)

Paleozoic

d)

Cambrianozoic

31.

What are the four eras in order from OLDEST to NEWEST?

a)

Pre-Cambrian, Paleozoic, Mesozoic, Cenozoic

b)

Pre-Cambrian, Mesozoic, Paleozoic, Cenozoic

c)

Cenozoic, Mesozoic, Paleozoic, Pre-Cambrian

d)

Mesozoic, Pre-Cambrian, Cenozoic, Paleozoic

32.

What era did trilobites, fishes, and other marine organisms dominate?

a)

Precambrian

b)

Paleozoic

c)

Mesozoic

d)

Cenozoic

33.

Which era is the most recent, the one that we are currently in?

a)

Mesozoic

b)

Paleozoic

c)

Cenozoic

d)

Precambrian

34.

The dinosaurs and reptiles were dominant in which Era?

a)

Precambrian

b)

Mesozoic

c)

Paleozoic

d)

Cenozoic

35.

Which period is closest to present day?

a)

Cambrian

b)

Devonian

c)

Triassic

d)

Jurassic

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