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WorksheetsFossils & Geologic Time
Total questions: 20
Worksheet time: 12mins
Name
Class
Date
1.
This is produced when sediments fill in a cavity made when an object decayed
a)
mold
b)
cast
c)
index fossil
2.
Fossils of species that existed for short periods and were widespread
a)
uniformitarianism
b)
cyanobacteria
c)
index fossils
3.
Process by which organisms with traits that are suited to a the environment survive.
a)
natural selection
b)
principle of superposition
c)
uniformitarianism
4.
What is a cavity in rock made when an organism decayed
a)
mold
b)
cast
c)
fossil
5.
The oldest rocks are on the bottom and the rocks become progressively younger toward the top
a)
uniformitarianism
b)
natural selection
c)
principle of superposition
d)
index fossils
6.
The principle that Earth’s processes occurring today are similar to those that did in the past.
a)
uniformitarianism
b)
natural selection
c)
principle of superposition
d)
cyanobacteria
7.
What is a large ancient landmass?
a)
Pangaea
b)
Cyanobacteria
c)
Africa
d)
Jumanji
8.
What are among the earliest life-forms on Earth?
a)
cyanobacteria
b)
mold
c)
bears
d)
sponges
9.
What are the remains, imprints, or traces of once-living organisms?
a)
index fossils
b)
fossil
c)
mold
d)
cast
10.
As ____ evolved, they changed Earth’s atmosphere by producing oxygen.
a)
cyanobacteria
b)
reptiles
c)
trilobites
d)
dinosaurs
11.
Humans appeared in the ____ Era.
a)
Cenozoic
b)
Paleozoic
c)
Mesozoic
d)
Devonian
12.
Which type of scientist studies fossils?
a)
meteorologist
b)
chemist
c)
paleontologist
d)
fossilologist
13.
Geologic time is divided into units based on ____.
a)
geologic changes
b)
fossils and rocks
c)
types of life-forms living during certain periods
d)
all of these
14.
Trilobites can be used to study the passage of geologic time because ____.
a)
they burrowed into sediments
b)
they lived in the oceans
c)
they lived throughout the Paleozoic Era
d)
their physical features changed through time
15.
A fossil may tell a geologist when, where, and how an organism lived.
a)
True
b)
False
16.
Scientists believe that dinosaurs were cold-blooded.
a)
True
b)
False
17.
The soft parts of organisms are most likely to become fossils.
a)
True
b)
False
18.
Preserved animal tracks are trace fossils.
a)
True
b)
False
19.
Fossils can never form from soft parts of organisms.
a)
True
b)
False
20.
Any fossil can be dated by the amount of carbon-14 it contains.
a)
True
b)
False
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