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WorksheetsFossils and Geologic Time
Total questions: 23
Worksheet time: 20mins
Name
Class
Date
1.
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
2.
Which fossil is a replica of the original shape of the organism?
a)
cast
b)
mold
c)
trace
d)
preserved remains
3.
Which fossil is an impression left by the original organism?
a)
cast
b)
mold
c)
trace
d)
preserved remains
4.
Relative dating of rock layers tells us that the deeper we dig, _______.
a)
the younger the rocks get
b)
the smellier the rocks get
c)
the harder the rocks get
d)
the older the rocks get
5.
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
6.
The Law of Superposition helps scientists to determine what?
a)
The absolute age of rock layers
b)
The age of fossils
c)
The relative age of rock layers
d)
the super powers of rocks
7.
What 2 things make a good index fossil?
a)
Good looks and a great smile
b)
widespread and on Earth of a short time
c)
widespread and on Earth for a long time
d)
only found in Kansas City and in every rock layer
8.
A bug stuck in amber is an example of what type of fossil?
a)
cast
b)
mold
c)
trace
d)
original remains
9.
What type of rock do fossils form in?
a)
Igneous
b)
Sedimentary
c)
Metamorphic
d)
Classic
10.
These are dinosaur footprints. What is this a example of?
a)
All of the below!!!!!
b)
index fossil
c)
permineralized remains
d)
trace fossil
11.
Which rock layer in the diagram seems to be the oldest?
a)
F
b)
E
c)
B
d)
A
12.
What can we learn from fossils?
a)
How earthquakes formed.
b)
How erosion changed mountains
c)
How Earth's magnetic field was formed
d)
How Earth's environment has changed
13.
What is a fossil?
a)
preserved remains or traces of an organism
b)
a type of rock
c)
a type of mountain formation
d)
a layer of the Earth
14.
The statement that the oldest layer will be at the bottom in an undisturbed sequence of rock layers is called the Principle of ....
a)
Inclusions
b)
Unconformities
c)
Cross-Cutting Relationships
d)
Superposition
15.
The Principle of Cross-Cutting Relationships states that an igneous intrusion is
a)
always younger than the layers it cuts across
b)
always older than the layers it cuts across
c)
the same age as the rock it melted
d)
none of the answers are correct
16.
Relative age dating is used to determine the...
a)
actual age of an event
b)
length of time between two events
c)
age of one event in comparison with other events
d)
rate at which a gologic process occurs
17.
Which of the following correctly lists the layers in order from oldest to youngest?
a)
A, B, C, D, E
b)
E, B, C, D, A
c)
E, D, C, B, A
d)
C, B, A, D, E
18.
The rock formation labeled "P" is a(n)...
a)
fault
b)
intrusion
c)
inclusion
d)
unconformity
19.
Letter "F" is a....
a)
inclusion
b)
intrusion
c)
fault
d)
unconformity
20.
The time is take for half of a radioactive isotopes to decay into stable isotopes is called the
a)
isotope decay
b)
radiometric dating
c)
half life
d)
absolute age
21.
Which area is most likely the youngest?
a)
1
b)
2
c)
3
d)
4
22.
The radioactive decay of material can be used to determine the age of fossils. This is called
a)
complete dating
b)
absolute dating
c)
relative dating
d)
fossil dating
23.
Which of these is the best indication of the relative age of a rock layer?
a)
The thickness of the layer
b)
The position of the layer compared to other layers
c)
The chemical makeup of the layer
d)
The distance the layer extends over the Earth
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