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WorksheetsChanges Over Time and the Fossil Record
Total questions: 20
Worksheet time: 13mins
Name
Class
Date
1.
By which method have scientists determined that the Earth is about 4.5 billion years old?
a)
plate tectonics
b)
relative dating
c)
radioactive dating
d)
law of superposition
2.
Which is the most accurate method scientists can use to estimate Earth's age?
a)
relativism
b)
superposition
c)
relative dating
d)
radioactive dating
3.
Which type of rock replaces bone and other hard organic materials to create rock molds of fossils?
a)
metamorphic
b)
sedimentary
c)
extrusive igneous
4.
What type of fossil is an imprint in a rock?
a)
cast
b)
trace
c)
mold
d)
whole/part
5.
Fossilized rock in the shape of dinosaur bones are which type of fossil?
a)
real bone
b)
mold fossil
c)
cast fossil
d)
trace fossil
6.
This type of fossil forms when sediments bury an organism and then sediments change into rock; the organism decays leaving a cavity in the shape of the organism.
a)
mold
b)
cast
c)
petrified
d)
trace
7.
This type of fossil forms when minerals soak into the buried remains, replacing the remains, and changing them into rock.
a)
mold
b)
cast
c)
petrified
d)
preserved
8.
Shells and skeletons are typically fossilized in this fashion.
a)
mold and cast
b)
trace
c)
carbonized or carbon film
d)
permineralized or petrified
9.
Trees and sometimes marine animals are sometimes fossilized this way
a)
permineralized or petrified
b)
trace
c)
carbonized or carbon film
d)
preserved or original remains
10.
Remains of animals can be preserved by preventing them from decaying. What substances might help preserve parts or a whole animal
a)
tar, amber, ice
b)
ice, carbonization, trace
c)
rock, amber, ice
d)
tar, carbonization, rock
11.
Hardened tree sap is called
a)
diamonds
b)
amber
c)
tar
d)
syrup
12.
What type of fossil is pictured?
a)
cast
b)
petrified fossil
c)
preserved remains
d)
trace fossil
13.
What are the remains, imprints, or traces of once-living organisms?
a)
index fossils
b)
fossil
c)
mold
d)
cast
14.
Which of the following could form a fossil?
a)
Bone
b)
Shell
c)
Seeds
d)
All of the above
15.
Most fossils form when organisms that die become buried in sediments
a)
True
b)
False
16.
Which of the following is true about molds and casts
a)
A mold forms when hard parts of an organism buried by sediments are gradually dissolved
b)
A mold that becomes filled in with hardened materials forms a cast
c)
A cast is a copy of the shape of an organism
d)
All of the above
17.
By determining the age of fossils, scientists can reconstruct the history of life on Earth
a)
True
b)
False
18.
The millions of fossils that scientists have collected are called
a)
The Geologic Time Scale
b)
The Origin of Species
c)
The Fossil Record
d)
A really neat fossil collection
19.
What are fossils?
a)
Living plants and animals.
b)
The remains of plants and animals.
c)
Minerals that are in the soil.
20.
Fossils harden through which process?
a)
Sedimentation
b)
Permineralization
c)
True Fossils
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